diff --git a/xmenu.c b/xmenu.c
index e3588fd..d02620a 100644
--- a/xmenu.c
+++ b/xmenu.c
@@ -345,6 +345,7 @@ static void
 calcmenu(struct Menu *menu)
 {
 	XWindowChanges changes;
+	XSizeHints sizeh;
 	struct Item *item;
 
 	/* calculate items positions and menu height */
@@ -392,6 +393,12 @@ calcmenu(struct Menu *menu)
 	changes.y = menu->y;
 	XConfigureWindow(dpy, menu->win, CWHeight | CWX | CWY, &changes);
 
+	/* set window manager size hints */
+	sizeh.flags = PMaxSize | PMinSize;
+	sizeh.min_width = sizeh.max_width = menu->w;
+	sizeh.min_height = sizeh.max_height = menu->h;
+	XSetWMNormalHints(dpy, menu->win, &sizeh);
+
 	/* calculate positions of submenus */
 	for (item = menu->list; item != NULL; item = item->next) {
 		if (item->submenu != NULL)
diff --git a/xmenu.sh b/xmenu.sh
index e3f3279..c6a2188 100755
--- a/xmenu.sh
+++ b/xmenu.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 
-cat <<EOF | ./xmenu | xargs sh -c
+cat <<EOF | ./xmenu -w | xargs sh -c
 Applications
 	Web Browser	firefox
 	Image editor	gimp