diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index 1a43365e..9cc4c25e 100755
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -4,7 +4,9 @@
 _XTRACE_NETWORKING_BGPVPN=$(set +o | grep xtrace)
 set -o xtrace
 
-source $NEUTRON_DIR/devstack/lib/l2_agent
+if is_service_enabled q-agt; then
+ source $NEUTRON_DIR/devstack/lib/l2_agent
+fi
 
 if [[ "1ドル" == "source" ]]; then
 # no-op
</div><div class="naked_ctrl">
<form action="/index.cgi/larger-text" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://opendev.org/openstack/networking-bgpvpn/commit/ee08e3d8ca20c31504f38079062ab5b1282c6fbd.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://opendev.org/openstack/networking-bgpvpn/commit/ee08e3d8ca20c31504f38079062ab5b1282c6fbd.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast">配色反転</option>
<option value="larger-text" selected="selected">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>