diff --git a/common/input.c b/common/input.c
index 7a0a23f..7bbb39c 100644
--- a/common/input.c
+++ b/common/input.c
@@ -1,3 +1,13 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2008-2010
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ *  - GNU GPL, version 2 or later.
+ *  - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/common/readpng.c b/common/readpng.c
index 50e8834..b7bad57 100644
--- a/common/readpng.c
+++ b/common/readpng.c
@@ -1,3 +1,13 @@
+/*
+ * (C) Gražvydas "notaz" Ignotas, 2008-2010
+ *
+ * This work is licensed under the terms of any of these licenses
+ * (at your option):
+ *  - GNU GPL, version 2 or later.
+ *  - GNU LGPL, version 2.1 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
 #include <stdio.h>
 #include <string.h>
 #include <png.h>