diff --git a/tests/validation/ReferenceCPP.h b/tests/validation/ReferenceCPP.h
index e7567ae..10e5ab6 100644
--- a/tests/validation/ReferenceCPP.h
+++ b/tests/validation/ReferenceCPP.h
@@ -314,4 +314,4 @@
 } // namespace validation
 } // namespace test
 } // namespace arm_compute
-#endif
+#endif /* __ARM_COMPUTE_TEST_REFERENCE_REFERENCE_CPP_H__ */