1 files changed, 2 insertions, 0 deletions
diff --git a/src/gui/kernel/qt_x11_p.h b/src/gui/kernel/qt_x11_p.h
index 56c8094819..d97264ca5f 100644
--- a/src/gui/kernel/qt_x11_p.h
+++ b/src/gui/kernel/qt_x11_p.h
@@ -226,6 +226,7 @@ typedef void (*PtrXRRSelectInput)(Display *, Window, int);
 typedef int (*PtrXRRUpdateConfiguration)(XEvent *);
 typedef int (*PtrXRRRootToScreen)(Display *, Window);
 typedef Bool (*PtrXRRQueryExtension)(Display *, int *, int *);
+typedef XRRScreenSize *(*PtrXRRSizes)(Display *, int, int *);
 #endif // QT_NO_XRANDR
 
 #ifndef QT_NO_XINPUT
@@ -710,6 +711,7 @@ struct QX11Data
     PtrXRRUpdateConfiguration ptrXRRUpdateConfiguration;
     PtrXRRRootToScreen ptrXRRRootToScreen;
     PtrXRRQueryExtension ptrXRRQueryExtension;
+    PtrXRRSizes ptrXRRSizes;
 #endif // QT_NO_XRANDR
 };