diff --git a/src/cocoa/textctrl.mm b/src/cocoa/textctrl.mm
index 5028866515..5524ac147d 100644
--- a/src/cocoa/textctrl.mm
+++ b/src/cocoa/textctrl.mm
@@ -22,6 +22,7 @@
 
 #import <Foundation/NSString.h>
 #import <AppKit/NSTextField.h>
+#import <AppKit/NSCell.h>
 
 #include <math.h>