diff --git a/source/blender/editors/screen/screen_edit.c b/source/blender/editors/screen/screen_edit.c
index c067e5a452d..e1c4962a97b 100644
--- a/source/blender/editors/screen/screen_edit.c
+++ b/source/blender/editors/screen/screen_edit.c
@@ -216,7 +216,7 @@ static short testsplitpoint(ScrArea *sa, char dir, float fac)
 {
 	short x, y;
 	const short area_min_x = AREAMINX;
-	const short area_min_y = ED_area_headersize();
+	const short area_min_y = ED_area_headersize() + 1;
 
 	// area big enough?
 	if (dir == 'v' && (sa->v4->vec.x - sa->v1->vec.x <= 2 * area_min_x)) return 0;