diff --git a/Source/NSToolbarItem.m b/Source/NSToolbarItem.m
index ca84d64ae..223da9ec5 100644
--- a/Source/NSToolbarItem.m
+++ b/Source/NSToolbarItem.m
@@ -32,6 +32,7 @@
 #include <AppKit/NSToolbarItem.h>
 #include <AppKit/NSToolbar.h>
 #include <AppKit/NSMenuItem.h>
+#include <AppKit/NSImage.h>
 
 @implementation NSToolbarItem
 - (BOOL)allowsDuplicatesInToolbar