diff --git a/util/nb-configuration.xml b/util/nb-configuration.xml
deleted file mode 100644
index 3486bc9..0000000
--- a/util/nb-configuration.xml
+++ /dev/null
@@ -1,18 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project-shared-configuration>
-    <!--
-This file contains additional configuration written by modules in the NetBeans IDE.
-The configuration is intended to be shared among all the users of project and
-therefore it is assumed to be part of version control checkout.
-Without this configuration present, some functionality in the IDE may be limited or fail altogether.
--->
-    <properties xmlns="http://www.netbeans.org/ns/maven-properties-data/1">
-        <!--
-Properties that influence various parts of the IDE, especially code formatting and the like. 
-You can copy and paste the single properties, into the pom.xml file and the IDE will pick them up.
-That way multiple projects can share the same settings (useful for formatting rules for example).
-Any value defined here will override the pom.xml file value but is only applicable to the current project.
--->
-        <netbeans.compile.on.save>all</netbeans.compile.on.save>
-    </properties>
-</project-shared-configuration>
diff --git a/util/pom.xml b/util/pom.xml
index 4e110cf..2ccd0b6 100644
--- a/util/pom.xml
+++ b/util/pom.xml
@@ -18,6 +18,7 @@
     <url>http://maven.apache.org</url>
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <netbeans.hint.license>gpl20</netbeans.hint.license>
     </properties>
 
     <dependencies>
diff --git a/util/src/main/java/de/muehlencord/shared/util/DateUtil.java b/util/src/main/java/de/muehlencord/shared/util/DateUtil.java
index 1b27a81..9a3782c 100644
--- a/util/src/main/java/de/muehlencord/shared/util/DateUtil.java
+++ b/util/src/main/java/de/muehlencord/shared/util/DateUtil.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util;
 
 import java.time.Instant;
diff --git a/util/src/main/java/de/muehlencord/shared/util/OSUtil.java b/util/src/main/java/de/muehlencord/shared/util/OSUtil.java
index 4b5f274..30add78 100644
--- a/util/src/main/java/de/muehlencord/shared/util/OSUtil.java
+++ b/util/src/main/java/de/muehlencord/shared/util/OSUtil.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util;
 
 import static java.lang.System.getProperties;
diff --git a/util/src/main/java/de/muehlencord/shared/util/StringEncodingException.java b/util/src/main/java/de/muehlencord/shared/util/StringEncodingException.java
index aaa9446..946dbe1 100644
--- a/util/src/main/java/de/muehlencord/shared/util/StringEncodingException.java
+++ b/util/src/main/java/de/muehlencord/shared/util/StringEncodingException.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util;
 
 /**
diff --git a/util/src/main/java/de/muehlencord/shared/util/StringUtil.java b/util/src/main/java/de/muehlencord/shared/util/StringUtil.java
index 227165c..22a3ad3 100644
--- a/util/src/main/java/de/muehlencord/shared/util/StringUtil.java
+++ b/util/src/main/java/de/muehlencord/shared/util/StringUtil.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util;
 
 import java.io.UnsupportedEncodingException;
diff --git a/util/src/main/java/de/muehlencord/shared/util/file/BOM.java b/util/src/main/java/de/muehlencord/shared/util/file/BOM.java
index 9c6b961..8d13ec9 100644
--- a/util/src/main/java/de/muehlencord/shared/util/file/BOM.java
+++ b/util/src/main/java/de/muehlencord/shared/util/file/BOM.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util.file;
 
 import java.io.UnsupportedEncodingException;
diff --git a/util/src/main/java/de/muehlencord/shared/util/file/BOMStripperInputStream.java b/util/src/main/java/de/muehlencord/shared/util/file/BOMStripperInputStream.java
index 6d9f446..de6201f 100644
--- a/util/src/main/java/de/muehlencord/shared/util/file/BOMStripperInputStream.java
+++ b/util/src/main/java/de/muehlencord/shared/util/file/BOMStripperInputStream.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util.file;
 
 import java.io.IOException;
diff --git a/util/src/main/java/de/muehlencord/shared/util/file/FileHandlingException.java b/util/src/main/java/de/muehlencord/shared/util/file/FileHandlingException.java
index c42fa6a..064e3a1 100644
--- a/util/src/main/java/de/muehlencord/shared/util/file/FileHandlingException.java
+++ b/util/src/main/java/de/muehlencord/shared/util/file/FileHandlingException.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util.file;
 
 import java.io.Serializable;
diff --git a/util/src/main/java/de/muehlencord/shared/util/file/FileUtil.java b/util/src/main/java/de/muehlencord/shared/util/file/FileUtil.java
index cdb06ac..e9aa416 100644
--- a/util/src/main/java/de/muehlencord/shared/util/file/FileUtil.java
+++ b/util/src/main/java/de/muehlencord/shared/util/file/FileUtil.java
@@ -1,3 +1,18 @@
+/* 
+ * Copyright 2019 Joern Muehlencord (joern@muehlencord.de).
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package de.muehlencord.shared.util.file;
 
 import java.io.BufferedReader;
diff --git a/util/src/test/java/de/muehlencord/shared/util/DefaultTest.java b/util/src/test/java/de/muehlencord/shared/util/DefaultTest.java
index 227d971..6748f6a 100644
--- a/util/src/test/java/de/muehlencord/shared/util/DefaultTest.java
+++ b/util/src/test/java/de/muehlencord/shared/util/DefaultTest.java
@@ -1,3 +1,20 @@
+/* 
+ * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
 package de.muehlencord.shared.util;
 
 import java.io.BufferedInputStream;
diff --git a/util/src/test/java/de/muehlencord/shared/util/OSUtilTest.java b/util/src/test/java/de/muehlencord/shared/util/OSUtilTest.java
index 7151a5a..e5f3f36 100644
--- a/util/src/test/java/de/muehlencord/shared/util/OSUtilTest.java
+++ b/util/src/test/java/de/muehlencord/shared/util/OSUtilTest.java
@@ -1,7 +1,19 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
+/* 
+ * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 package de.muehlencord.shared.util;
 
@@ -13,7 +25,7 @@ import org.junit.jupiter.api.Test;
 
 /**
  *
- * @author jomu
+ * @author Joern Muehlencord (joern@muehlencord.de)
  */
 public class OSUtilTest {
 
diff --git a/util/src/test/java/de/muehlencord/shared/util/StringEncodingExceptionTest.java b/util/src/test/java/de/muehlencord/shared/util/StringEncodingExceptionTest.java
index 91107a6..bee1cff 100644
--- a/util/src/test/java/de/muehlencord/shared/util/StringEncodingExceptionTest.java
+++ b/util/src/test/java/de/muehlencord/shared/util/StringEncodingExceptionTest.java
@@ -1,9 +1,20 @@
-/*
- * To change this license header, choose License Headers in Project Properties.
- * To change this template file, choose Tools | Templates
- * and open the template in the editor.
+/* 
+ * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
-
 package de.muehlencord.shared.util;
 
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -11,7 +22,7 @@ import org.junit.jupiter.api.Test;
 
 /**
  *
- * @author jomu
+ * @author Joern Muehlencord (joern@muehlencord.de)
  */
 public class StringEncodingExceptionTest {
     
diff --git a/util/src/test/java/de/muehlencord/shared/util/StringUtilTest.java b/util/src/test/java/de/muehlencord/shared/util/StringUtilTest.java
index 284a3ee..a8e602f 100644
--- a/util/src/test/java/de/muehlencord/shared/util/StringUtilTest.java
+++ b/util/src/test/java/de/muehlencord/shared/util/StringUtilTest.java
@@ -1,3 +1,20 @@
+/* 
+ * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
 package de.muehlencord.shared.util;
 
 import static de.muehlencord.shared.util.StringUtil.getValueBetweenKeywords;
diff --git a/util/src/test/java/de/muehlencord/shared/util/file/FileUtilTest.java b/util/src/test/java/de/muehlencord/shared/util/file/FileUtilTest.java
index f82d0eb..b4f32cb 100644
--- a/util/src/test/java/de/muehlencord/shared/util/file/FileUtilTest.java
+++ b/util/src/test/java/de/muehlencord/shared/util/file/FileUtilTest.java
@@ -1,3 +1,20 @@
+/* 
+ * Copyright (C) 2019 Joern Muehlencord (joern@muehlencord.de)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
 package de.muehlencord.shared.util.file;
 
 import static de.muehlencord.shared.util.file.FileUtil.getFilesFromDirecotry;
@@ -12,7 +29,7 @@ import org.junit.jupiter.api.Test;
 
 /**
  *
- * @author jomu
+ * @author Joern Muehlencord (joern@muehlencord.de)
  */
 public class FileUtilTest {