diff --git a/src/corelib/kernel/qcore_mac_p.h b/src/corelib/kernel/qcore_mac_p.h
index 3617eb33d48..319b0379ad7 100644
--- a/src/corelib/kernel/qcore_mac_p.h
+++ b/src/corelib/kernel/qcore_mac_p.h
@@ -75,6 +75,7 @@ struct mach_header;
 
 #include "qstring.h"
 #include "qscopedpointer.h"
+#include "qpair.h"
 
 #if defined( __OBJC__) && defined(QT_NAMESPACE)
 #define QT_NAMESPACE_ALIAS_OBJC_CLASS(__KLASS__) @compatibility_alias __KLASS__ QT_MANGLE_NAMESPACE(__KLASS__)