diff --git a/include/wx/osx/private.h b/include/wx/osx/private.h
index a49a4166f8..23fd0025fb 100644
--- a/include/wx/osx/private.h
+++ b/include/wx/osx/private.h
@@ -2,7 +2,6 @@
 #define _WX_PRIVATE_OSX_H_
 
 #include "wx/osx/core/private.h"
-#include "wx/osx/private/datatransfer.h"
 
 #if wxOSX_USE_IPHONE
     #include "wx/osx/iphone/private.h"
diff --git a/src/osx/carbon/clipbrd.cpp b/src/osx/carbon/clipbrd.cpp
index 6012d3747e..6c463d0d99 100644
--- a/src/osx/carbon/clipbrd.cpp
+++ b/src/osx/carbon/clipbrd.cpp
@@ -28,6 +28,7 @@
 #include "wx/scopedarray.h"
 
 #include "wx/osx/private.h"
+#include "wx/osx/private/datatransfer.h"
 
 #define wxUSE_DATAOBJ 1
 
diff --git a/src/osx/carbon/dataobj.cpp b/src/osx/carbon/dataobj.cpp
index 61e37b7e2b..2dbf820461 100644
--- a/src/osx/carbon/dataobj.cpp
+++ b/src/osx/carbon/dataobj.cpp
@@ -30,6 +30,7 @@
 #include "wx/filename.h"
 
 #include "wx/osx/private.h"
+#include "wx/osx/private/datatransfer.h"
 
 static CFStringRef kUTTypeTraditionalMacText = CFSTR("com.apple.traditional-mac-plain-text");
 
diff --git a/src/osx/cocoa/dnd.mm b/src/osx/cocoa/dnd.mm
index 6ff71f619d..019d2adb18 100644
--- a/src/osx/cocoa/dnd.mm
+++ b/src/osx/cocoa/dnd.mm
@@ -30,6 +30,7 @@
 #include "wx/evtloop.h"
 
 #include "wx/osx/private.h"
+#include "wx/osx/private/datatransfer.h"
 
 wxOSXDataSinkItem::~wxOSXDataSinkItem()
 {
diff --git a/src/osx/cocoa/window.mm b/src/osx/cocoa/window.mm
index 8a8a12b948..a589187a8e 100644
--- a/src/osx/cocoa/window.mm
+++ b/src/osx/cocoa/window.mm
@@ -22,6 +22,7 @@
 #ifdef __WXMAC__
     #include "wx/osx/private.h"
     #include "wx/osx/private/available.h"
+    #include "wx/osx/private/datatransfer.h"
 #endif
 
 #include "wx/evtloop.h"