diff --git a/src/Magnum/Math/StrictWeakOrdering.h b/src/Magnum/Math/StrictWeakOrdering.h
index f9c681c10..684496bf7 100644
--- a/src/Magnum/Math/StrictWeakOrdering.h
+++ b/src/Magnum/Math/StrictWeakOrdering.h
@@ -1,4 +1,4 @@
-#ifndef Magnum_Math_StrictWeakOrdering_h
+#ifndef Magnum_Math_StrictWeakOrdering_h
 #define Magnum_Math_StrictWeakOrdering_h
 /*
     This file is part of Magnum.