diff --git a/libvo/vo_gl.c b/libvo/vo_gl.c
index ef82316259..c57285c922 100644
--- a/libvo/vo_gl.c
+++ b/libvo/vo_gl.c
@@ -198,7 +198,7 @@ static void resize(int x,int y){
   mp_msg(MSGT_VO, MSGL_V, "[gl] Resize: %dx%d\n",x,y);
   if (WinID >= 0) {
     int top = 0, left = 0, w = x, h = y;
-    geometry(&top, &left, &w, &h, vo_screenwidth, vo_screenheight);
+    geometry(&top, &left, &w, &h, vo_dwidth, vo_dheight);
     mpglViewport(top, left, w, h);
   } else
     mpglViewport( 0, 0, x, y );