diff --git a/src/client.c b/src/client.c
index 60430a8..d53edd4 100644
--- a/src/client.c
+++ b/src/client.c
@@ -3142,7 +3142,7 @@ clientNewMaxSize (Client *c, XWindowChanges *wc, GdkRectangle *rect, tilePositio
         switch (tile)
         {
             case TILE_UP:
-                tmp_h = full_h / 2;
+                tmp_h = full_h;
                 tmp_y = full_y;
                 clientMaxSpace (screen_info, &full_x, &tmp_y, &full_w, &tmp_h);
                 wc->y = tmp_y + frameTop (c);