diff --git a/src/backend/wayland/wl_backend.c b/src/backend/wayland/wl_backend.c
index c67cfee..d2faf79 100644
--- a/src/backend/wayland/wl_backend.c
+++ b/src/backend/wayland/wl_backend.c
@@ -1951,11 +1951,14 @@ handle_xwayland_new_surface(struct wl_listener *listener, void *data)
              xw->title ? xw->title : "(none)",
              xw->x, xw->y);
 
-    /* Send initial configure so the X11 client gets a position. */
-    wlr_xwayland_surface_configure(xw,
-        (int16_t)view->x, (int16_t)view->y,
-        xw->width  > 0 ? xw->width  : 640,
-        xw->height > 0 ? xw->height : 480);
+    /* Send initial configure so the X11 client gets a position and size.
+     * Use the client's requested size if reasonable, otherwise default. */
+    {
+        int cw = (xw->width >= 64) ? xw->width : 640;
+        int ch = (xw->height >= 64) ? xw->height : 480;
+        wlr_xwayland_surface_configure(xw,
+            (int16_t)view->x, (int16_t)view->y, cw, ch);
+    }
 }
 
 /*