diff --git a/tests/validation/reference/InstanceNormalizationLayer.h b/tests/validation/reference/InstanceNormalizationLayer.h
index 2926e09..5c4ee6d 100644
--- a/tests/validation/reference/InstanceNormalizationLayer.h
+++ b/tests/validation/reference/InstanceNormalizationLayer.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_INSTANCENORMALIZATION_H__
-#define __ARM_COMPUTE_TEST_INSTANCENORMALIZATION_H__
+#ifndef ARM_COMPUTE_TEST_INSTANCENORMALIZATION_H
+#define ARM_COMPUTE_TEST_INSTANCENORMALIZATION_H
 
 #include "tests/SimpleTensor.h"
 #include "tests/validation/Helpers.h"
@@ -41,4 +41,4 @@
 } // namespace validation
 } // namespace test
 } // namespace arm_compute
-#endif /* __ARM_COMPUTE_TEST_INSTANCENORMALIZATION_H__ */
+#endif /* ARM_COMPUTE_TEST_INSTANCENORMALIZATION_H */