diff --git a/include/wx/cocoa/ObjcPose.h b/include/wx/cocoa/ObjcPose.h
index 3697cecf7d..b787528638 100644
--- a/include/wx/cocoa/ObjcPose.h
+++ b/include/wx/cocoa/ObjcPose.h
@@ -17,7 +17,7 @@ Objective-C Poser class initialization
 -------------------------------------------------------------------------*/
 #ifdef __OBJC__
 #import <objc/objc-class.h>
-#import <Foundation/NSObjcRuntime.h>
+#import <Foundation/NSObjCRuntime.h>
 
 class wxPoseAsInitializer
 {
diff --git a/src/cocoa/NSPanel.mm b/src/cocoa/NSPanel.mm
index 326454c015..ef391e8569 100644
--- a/src/cocoa/NSPanel.mm
+++ b/src/cocoa/NSPanel.mm
@@ -24,7 +24,7 @@
 
 #include "wx/cocoa/NSPanel.h"
 
-#import <Appkit/NSPanel.h>
+#import <AppKit/NSPanel.h>
 
 // ----------------------------------------------------------------------------
 // globals
diff --git a/src/cocoa/NSView.mm b/src/cocoa/NSView.mm
index 7f880656e6..03d065c195 100644
--- a/src/cocoa/NSView.mm
+++ b/src/cocoa/NSView.mm
@@ -25,7 +25,7 @@
 #include "wx/cocoa/ObjcPose.h"
 #include "wx/cocoa/NSView.h"
 
-#import <Appkit/NSView.h>
+#import <AppKit/NSView.h>
 #import <Foundation/NSNotification.h>
 #import <Foundation/NSString.h>
 
diff --git a/src/cocoa/NSWindow.mm b/src/cocoa/NSWindow.mm
index aef1f0ead5..55aab6f438 100644
--- a/src/cocoa/NSWindow.mm
+++ b/src/cocoa/NSWindow.mm
@@ -26,7 +26,7 @@
 #include "wx/cocoa/ObjcPose.h"
 #include "wx/cocoa/NSWindow.h"
 
-#import <Appkit/NSWindow.h>
+#import <AppKit/NSWindow.h>
 #import <Foundation/NSNotification.h>
 #import <Foundation/NSString.h>
 
diff --git a/src/cocoa/dc.mm b/src/cocoa/dc.mm
index c40f86acae..013c6eaa8c 100644
--- a/src/cocoa/dc.mm
+++ b/src/cocoa/dc.mm
@@ -24,7 +24,7 @@
 #import <AppKit/NSGraphicsContext.h>
 #import <AppKit/NSAffineTransform.h>
 #import <AppKit/NSColor.h>
-#import <AppKit/NSTypeSetter.h>
+#import <AppKit/NSTypesetter.h>
 #import <AppKit/NSImage.h>
 
 #include <wx/listimpl.cpp>
diff --git a/src/cocoa/window.mm b/src/cocoa/window.mm
index 1ce1295c50..e6df2b6fa8 100644
--- a/src/cocoa/window.mm
+++ b/src/cocoa/window.mm
@@ -17,7 +17,7 @@
 
 #include "wx/cocoa/autorelease.h"
 
-#import <Appkit/NSView.h>
+#import <AppKit/NSView.h>
 #import <AppKit/NSEvent.h>
 #import <AppKit/NSScrollView.h>
 #import <AppKit/NSColor.h>