diff -r 93b982ccede2 -r 5daf16870df6 src/gui/kernel/qt_mac_p.h
--- a/src/gui/kernel/qt_mac_p.h	Mon Jun 21 22:38:13 2010 +0100
+++ b/src/gui/kernel/qt_mac_p.h	Thu Jul 22 16:41:55 2010 +0100
@@ -57,6 +57,9 @@
 
 #ifdef __OBJC__
 #include <Cocoa/Cocoa.h>
+#ifdef QT_MAC_USE_COCOA
+#include <objc/runtime.h>
+#endif // QT_MAC_USE_COCOA
 #endif
 
 #include <CoreServices/CoreServices.h>