diff --git a/panel/panel-window.c b/panel/panel-window.c
index c21aac3..d0c91f0 100644
--- a/panel/panel-window.c
+++ b/panel/panel-window.c
@@ -2104,18 +2104,18 @@ panel_window_screen_layout_changed (GdkScreen   *screen,
               || (window->struts_edge == STRUTS_EDGE_RIGHT
                   && b.x + b.width > a.x + a.width))
             {
-              dest_y = MAX (a.y, b.y);
-              dest_h = MIN (a.y + a.height, b.y + b.height) - dest_y;
-              if (dest_h > 0)
+              dest_x = MAX (a.x, b.x);
+              dest_w = MIN (a.x + a.width, b.x + b.width) - dest_x;
+              if (dest_w > 0)
                 window->struts_edge = STRUTS_EDGE_NONE;
             }
           else if ((window->struts_edge == STRUTS_EDGE_TOP && b.y < a.y)
                    || (window->struts_edge == STRUTS_EDGE_BOTTOM
                        && b.y + b.height > a.y + a.height))
             {
-              dest_x = MAX (a.x, b.x);
-              dest_w = MIN (a.x + a.width, b.x + b.width) - dest_x;
-              if (dest_w > 0)
+              dest_y = MAX (a.y, b.y);
+              dest_h = MIN (a.y + a.height, b.y + b.height) - dest_y;
+              if (dest_h > 0)
                 window->struts_edge = STRUTS_EDGE_NONE;
             }
         }