diff --git a/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeResultTest.java b/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeResultTest.java
index 1823bd0..2763724 100644
--- a/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeResultTest.java
+++ b/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeResultTest.java
@@ -1,3 +1,21 @@
+/*
+    DroidFish - An Android chess program.
+    Copyright (C) 2014  Peter Österlund, peterosterlund2@gmail.com
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
 package org.petero.droidfish.tb;
 
 import org.petero.droidfish.tb.ProbeResult;
diff --git a/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeTest.java b/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeTest.java
index 5a5136a..4b1812e 100644
--- a/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeTest.java
+++ b/DroidFishApp/src/androidTest/java/org/petero/droidfish/tb/ProbeTest.java
@@ -1,3 +1,21 @@
+/*
+    DroidFish - An Android chess program.
+    Copyright (C) 2014  Peter Österlund, peterosterlund2@gmail.com
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
 package org.petero.droidfish.tb;
 
 import org.petero.droidfish.gamelogic.Position;
diff --git a/DroidFishApp/src/main/java/org/petero/droidfish/PieceSet.java b/DroidFishApp/src/main/java/org/petero/droidfish/PieceSet.java
index 4962b7e..b03c263 100644
--- a/DroidFishApp/src/main/java/org/petero/droidfish/PieceSet.java
+++ b/DroidFishApp/src/main/java/org/petero/droidfish/PieceSet.java
@@ -1,3 +1,21 @@
+/*
+    DroidFish - An Android chess program.
+    Copyright (C) 2019  Peter Österlund, peterosterlund2@gmail.com
+
+    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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
 package org.petero.droidfish;
 
 import android.content.SharedPreferences;
diff --git a/DroidFishApp/src/main/java/org/petero/droidfish/tb/GtbProbe.java b/DroidFishApp/src/main/java/org/petero/droidfish/tb/GtbProbe.java
index 4131ada..2ac4fee 100644
--- a/DroidFishApp/src/main/java/org/petero/droidfish/tb/GtbProbe.java
+++ b/DroidFishApp/src/main/java/org/petero/droidfish/tb/GtbProbe.java
@@ -1,5 +1,5 @@
 /*
-    GtbProbe - Java interface to Gaviota endgame tablebases.
+    DroidFish - An Android chess program.
     Copyright (C) 2011-2012  Peter Österlund, peterosterlund2@gmail.com
 
     This program is free software: you can redistribute it and/or modify
diff --git a/DroidFishApp/src/main/java/org/petero/droidfish/tb/Probe.java b/DroidFishApp/src/main/java/org/petero/droidfish/tb/Probe.java
index f06c399..40ff6db 100644
--- a/DroidFishApp/src/main/java/org/petero/droidfish/tb/Probe.java
+++ b/DroidFishApp/src/main/java/org/petero/droidfish/tb/Probe.java
@@ -1,5 +1,5 @@
 /*
-    GtbCuckoo - Interface to Gaviota endgame tablebases.
+    DroidFish - An Android chess program.
     Copyright (C) 2011-2012  Peter Österlund, peterosterlund2@gmail.com
 
     This program is free software: you can redistribute it and/or modify