diff --git a/src/gui/src/LoginAuth.cpp b/src/gui/src/LoginAuth.cpp
index 6aeb83ef..ea54ded0 100644
--- a/src/gui/src/LoginAuth.cpp
+++ b/src/gui/src/LoginAuth.cpp
@@ -1,3 +1,20 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2015 Synergy Si Ltd.
+ *
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ *
+ * This package 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/>.
+ */
+
 #include "LoginAuth.h"
 
 #include "LoginWindow.h"
diff --git a/src/gui/src/LoginAuth.h b/src/gui/src/LoginAuth.h
index ed0a67ca..4df8d860 100644
--- a/src/gui/src/LoginAuth.h
+++ b/src/gui/src/LoginAuth.h
@@ -1,3 +1,20 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2015 Synergy Si Ltd.
+ *
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ *
+ * This package 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/>.
+ */
+
 #ifndef LOGINAUTH_H
 #define LOGINAUTH_H
 
diff --git a/src/gui/src/LoginResult.h b/src/gui/src/LoginResult.h
index 62cc5093..1cda4978 100644
--- a/src/gui/src/LoginResult.h
+++ b/src/gui/src/LoginResult.h
@@ -1,3 +1,20 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2015 Synergy Si Ltd.
+ *
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ *
+ * This package 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/>.
+ */
+
 #ifndef LOGINRESULT_H
 #define LOGINRESULT_H
 
diff --git a/src/gui/src/LoginWindow.cpp b/src/gui/src/LoginWindow.cpp
index dcb80f61..34909959 100644
--- a/src/gui/src/LoginWindow.cpp
+++ b/src/gui/src/LoginWindow.cpp
@@ -1,3 +1,20 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2015 Synergy Si Ltd.
+ *
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ *
+ * This package 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/>.
+ */
+
 #include "LoginWindow.h"
 #include "ui_LoginWindowBase.h"
 
diff --git a/src/gui/src/LoginWindow.h b/src/gui/src/LoginWindow.h
index 1490b792..da0906bc 100644
--- a/src/gui/src/LoginWindow.h
+++ b/src/gui/src/LoginWindow.h
@@ -1,3 +1,20 @@
+/*
+ * synergy -- mouse and keyboard sharing utility
+ * Copyright (C) 2015 Synergy Si Ltd.
+ *
+ * This package is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * found in the file COPYING that should have accompanied this file.
+ *
+ * This package 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/>.
+ */
+
 #ifndef LOGINWINDOW_H
 #define LOGINWINDOW_H