diff --git a/app/src/main/java/org/shadowice/flocke/andotp/Activities/BaseActivity.java b/app/src/main/java/org/shadowice/flocke/andotp/Activities/BaseActivity.java
index 256d773e..c1a58c44 100644
--- a/app/src/main/java/org/shadowice/flocke/andotp/Activities/BaseActivity.java
+++ b/app/src/main/java/org/shadowice/flocke/andotp/Activities/BaseActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright (C) 2017 Jakob Nixdorf
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package org.shadowice.flocke.andotp.Activities;
 
 import android.content.SharedPreferences;
diff --git a/app/src/main/java/org/shadowice/flocke/andotp/Activities/PanicResponderActivity.java b/app/src/main/java/org/shadowice/flocke/andotp/Activities/PanicResponderActivity.java
index ecd00cf2..f671aeab 100644
--- a/app/src/main/java/org/shadowice/flocke/andotp/Activities/PanicResponderActivity.java
+++ b/app/src/main/java/org/shadowice/flocke/andotp/Activities/PanicResponderActivity.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright (C) 2017 Carlos Melero
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package org.shadowice.flocke.andotp.Activities;
 
 import android.app.Activity;
diff --git a/app/src/main/java/org/shadowice/flocke/andotp/Preferences/PasswordPreference.java b/app/src/main/java/org/shadowice/flocke/andotp/Preferences/PasswordPreference.java
index dc3b3092..dd7ecb2f 100644
--- a/app/src/main/java/org/shadowice/flocke/andotp/Preferences/PasswordPreference.java
+++ b/app/src/main/java/org/shadowice/flocke/andotp/Preferences/PasswordPreference.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright (C) 2017 Jakob Nixdorf
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package org.shadowice.flocke.andotp.Preferences;
 
 import android.content.Context;
diff --git a/app/src/main/java/org/shadowice/flocke/andotp/View/EntryViewHolder.java b/app/src/main/java/org/shadowice/flocke/andotp/View/EntryViewHolder.java
index 09e21f37..b4ff7be5 100644
--- a/app/src/main/java/org/shadowice/flocke/andotp/View/EntryViewHolder.java
+++ b/app/src/main/java/org/shadowice/flocke/andotp/View/EntryViewHolder.java
@@ -1,3 +1,25 @@
+/*
+ * Copyright (C) 2017 Jakob Nixdorf
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package org.shadowice.flocke.andotp.View;
 
 import android.content.Context;