diff --git a/test/src/test_struct.c b/test/src/test_struct.c
index 3423ace..9c1126f 100644
--- a/test/src/test_struct.c
+++ b/test/src/test_struct.c
@@ -1,3 +1,10 @@
+/*
+* Copyright (c), Recep Aslantas.
+*
+* MIT License (MIT), http://opensource.org/licenses/MIT
+* Full license can be found in the LICENSE file
+*/
+
 #include "test_common.h"
 
 TEST_IMPL(mat3s_identity_init) {