diff --git a/tests/validation/reference/WarpPerspective.h b/tests/validation/reference/WarpPerspective.h
index 2367f4d..b919d62 100644
--- a/tests/validation/reference/WarpPerspective.h
+++ b/tests/validation/reference/WarpPerspective.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -21,8 +21,8 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-#ifndef __ARM_COMPUTE_TEST_WARP_PERSPECTIVE_H__
-#define __ARM_COMPUTE_TEST_WARP_PERSPECTIVE_H__
+#ifndef ARM_COMPUTE_TEST_WARP_PERSPECTIVE_H
+#define ARM_COMPUTE_TEST_WARP_PERSPECTIVE_H
 
 #include "tests/SimpleTensor.h"
 
@@ -40,4 +40,4 @@
 } // namespace validation
 } // namespace test
 } // namespace arm_compute
-#endif /* __ARM_COMPUTE_TEST_WARP_PERSPECTIVE_H__ */
+#endif /* ARM_COMPUTE_TEST_WARP_PERSPECTIVE_H */