diff --git a/bin/web_kbn.py b/bin/web_kbn.py
index 9e7b22a..e52ee50 100755
--- a/bin/web_kbn.py
+++ b/bin/web_kbn.py
@@ -341,7 +341,11 @@ async def sms(req: web.Request):
     error = req.query.get('error', None)
     sent = int(req.query.get('sent', 0)) == 1
 
-    cl = get_modem_client(ModemsConfig()[modem])
+    input_modem = ModemsConfig()[modem]
+    if input_modem['type'] != 'e3372':
+        raise ValueError('invalid modem')
+
+    cl = get_modem_client(input_modem)
     messages = cl.sms_list(1, 20, is_outbox)
     return await render(req, 'sms',
                         title=lang('sms_page_title') % (lang('sms_outbox') if is_outbox else lang('sms_inbox'), modem),
@@ -365,7 +369,7 @@ async def sms_post(req: web.Request):
     text = fd.get('text', None)
 
     return_url = f'sms.cgi?id={modem}&outbox={int(is_outbox)}'
-    phone = re.sub('\s+', '', phone)
+    phone = re.sub(r'\s+', '', phone)
 
     if len(phone) > 4:
         country = None
diff --git a/web/kbn_templates/sms.j2 b/web/kbn_templates/sms.j2
index 720a7bd..57fbfb9 100644
--- a/web/kbn_templates/sms.j2
+++ b/web/kbn_templates/sms.j2
@@ -6,9 +6,11 @@
 <nav>
   <div class="nav nav-tabs" id="nav-tab">
     {% for modem in modems.keys() %}
-      {% if selected_modem != modem %}<a href="sms.cgi?id={{ modem }}" class="text-decoration-none">{% endif %}
-      <button class="nav-link{% if modem == selected_modem %} active{% endif %}" type="button">{{ (modem|lang('modems'))['short'] }}</button>
-      {% if selected_modem != modem %}</a>{% endif %}
+      {% if modems[modem].type == 'e3372' %}
+        {% if selected_modem != modem %}<a href="sms.cgi?id={{ modem }}" class="text-decoration-none">{% endif %}
+        <button class="nav-link{% if modem == selected_modem %} active{% endif %}" type="button">{{ (modem|lang('modems'))['short'] }}</button>
+        {% if selected_modem != modem %}</a>{% endif %}
+      {% endif %}
     {% endfor %}
   </div>
 </nav>