diff --git a/root/scripts/start.sh b/root/scripts/start.sh
index b8809ec..43ec026 100755
--- a/root/scripts/start.sh
+++ b/root/scripts/start.sh
@@ -11,6 +11,21 @@ if [ ! -f /config/.config/openbox/rc.xml ] || grep -A20 "<dock>" /config/.config
     openbox --reconfigure
 fi
 
+# configure default window behavior: open WeChat/QQ as normal windows instead of maximized
+OB_RC="/config/.config/openbox/rc.xml"
+if [ -f "$OB_RC" ] && ! grep -q '<application class="wechat"' "$OB_RC"; then
+    sed -i '/<\/openbox_config>/i \
+  <applications>\
+    <application class="wechat">\
+      <maximized>no</maximized>\
+    </application>\
+    <application class="QQ">\
+      <maximized>no</maximized>\
+    </application>\
+  </applications>' "$OB_RC"
+    openbox --reconfigure 2>/dev/null || true
+fi
+
 # generate openbox menu from defaults + ~/Desktop/*.desktop files
 /scripts/refresh-menu.sh