diff --git a/gdk/quartz/gdkwindow-quartz.h b/gdk/quartz/gdkwindow-quartz.h
index df001f05d9..cbb0fe1668 100644
--- a/gdk/quartz/gdkwindow-quartz.h
+++ b/gdk/quartz/gdkwindow-quartz.h
@@ -32,7 +32,9 @@
 #ifndef NSINTEGER_DEFINED
 typedef int NSInteger;
 typedef unsigned int NSUInteger;
+#endif
 
+#ifndef CGFLOAT_DEFINED
 typedef float CGFloat;
 #endif