diff --git a/src/cocoa/radiobox.mm b/src/cocoa/radiobox.mm
index 4319dcfb38..0d71ecdfad 100644
--- a/src/cocoa/radiobox.mm
+++ b/src/cocoa/radiobox.mm
@@ -24,6 +24,7 @@
 #include "wx/cocoa/string.h"
 #include "wx/cocoa/autorelease.h"
 
+#import <Foundation/NSArray.h>
 #include "wx/cocoa/objc/NSView.h"
 #import <AppKit/NSButton.h>
 #import <AppKit/NSBox.h>
diff --git a/src/cocoa/window.mm b/src/cocoa/window.mm
index 4bca4f30fe..633500a25a 100644
--- a/src/cocoa/window.mm
+++ b/src/cocoa/window.mm
@@ -23,6 +23,7 @@
 #include "wx/cocoa/autorelease.h"
 #include "wx/cocoa/string.h"
 
+#import <Foundation/NSArray.h>
 #include "wx/cocoa/objc/NSView.h"
 #import <AppKit/NSEvent.h>
 #import <AppKit/NSScrollView.h>