diff --git a/tests/validation/reference/ActivationLayer.h b/tests/validation/reference/ActivationLayer.h
index 2d5dfdf..cd861d7 100644
--- a/tests/validation/reference/ActivationLayer.h
+++ b/tests/validation/reference/ActivationLayer.h
@@ -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_ACTIVATION_LAYER_H__
-#define __ARM_COMPUTE_TEST_ACTIVATION_LAYER_H__
+#ifndef ARM_COMPUTE_TEST_ACTIVATION_LAYER_H
+#define ARM_COMPUTE_TEST_ACTIVATION_LAYER_H
 
 #include "tests/SimpleTensor.h"
 #include "tests/validation/Helpers.h"
@@ -95,4 +95,4 @@
 } // namespace validation
 } // namespace test
 } // namespace arm_compute
-#endif /* __ARM_COMPUTE_TEST_ACTIVATION_LAYER_H__ */
+#endif /* ARM_COMPUTE_TEST_ACTIVATION_LAYER_H */