diff --git a/gfx/fonts/coretext.c b/gfx/fonts/coretext.c
index 440fd1826b..81347ceb3c 100644
--- a/gfx/fonts/coretext.c
+++ b/gfx/fonts/coretext.c
@@ -20,6 +20,7 @@
 #include <stddef.h>
 #include <stdlib.h>
 
+#include <CoreFoundation/CFString.h>
 #include <CoreText/CoreText.h>
 #include <CoreGraphics/CoreGraphics.h>