diff --git a/src/plugins/platforms/cocoa/qcocoatheme.mm b/src/plugins/platforms/cocoa/qcocoatheme.mm
index 2f4a1e3e4c..a1c1b379f7 100644
--- a/src/plugins/platforms/cocoa/qcocoatheme.mm
+++ b/src/plugins/platforms/cocoa/qcocoatheme.mm
@@ -57,6 +57,7 @@
 #include <QtGui/qpainter.h>
 #include <QtFontDatabaseSupport/private/qcoretextfontdatabase_p.h>
 #include <QtThemeSupport/private/qabstractfileiconengine_p.h>
+#include <qpa/qplatformdialoghelper.h>
 #include <qpa/qplatformintegration.h>
 #include <qpa/qplatformnativeinterface.h>