diff --git a/Source/Details/CoreGraphics+ASConvenience.h b/Source/Details/CoreGraphics+ASConvenience.h
index d327fadde..a0805f170 100644
--- a/Source/Details/CoreGraphics+ASConvenience.h
+++ b/Source/Details/CoreGraphics+ASConvenience.h
@@ -10,7 +10,7 @@
 #import <Foundation/Foundation.h>
 
 #import <CoreGraphics/CoreGraphics.h>
-#import <cmath>
+#import <tgmath.h>
 
 #import <AsyncDisplayKit/ASBaseDefines.h>