diff --git a/client.c b/client.c
index d6852f85..049e3d55 100644
--- a/client.c
+++ b/client.c
@@ -1038,7 +1038,7 @@ client_set_fullscreen(lua_State *L, int cidx, bool s)
         {
             /* The titlebar was banned, unban! */
             titlebar_unban(c->titlebar);
-            geometry = c->geometries.fullscreen;
+            geometry = titlebar_geometry_add(c->titlebar, 0, c->geometries.fullscreen);
             c->fullscreen = false;
             client_set_border_width(L, cidx, c->border_width_fs);
         }