diff --git a/plinth/modules/networks/static/networks.js b/plinth/modules/networks/static/networks.js
index 14e7e1800..af2260051 100644
--- a/plinth/modules/networks/static/networks.js
+++ b/plinth/modules/networks/static/networks.js
@@ -103,7 +103,7 @@ jQuery(function($) {
 // collapsible so that the form element can be highlighted and an error tooltip
 // can be show by the browser.
 document.addEventListener('DOMContentLoaded', event => {
-    const selector = '.form-connection-edit input, .form-connection-create input';
+    const selector = '.form-connection input, .form-connection select';
     const input_elements = document.querySelectorAll(selector);
     input_elements.forEach(input =>
         input.addEventListener('invalid', on_invalid_event)
@@ -112,9 +112,7 @@ document.addEventListener('DOMContentLoaded', event => {
 
 function on_invalid_event(event) {
     const element = event.target;
-    console.log('Invalid event on element', element);
     const parent = element.closest('.collapse');
-    console.log('Invalid event with parent', parent);
     // Don't use .collapse(). Instead, expand all the sections with errors.
     parent.classList.add('show');
 }
diff --git a/plinth/modules/networks/templates/connections_create.html b/plinth/modules/networks/templates/connections_create.html
index d444340ad..6d8b5764c 100644
--- a/plinth/modules/networks/templates/connections_create.html
+++ b/plinth/modules/networks/templates/connections_create.html
@@ -9,7 +9,7 @@
 
   <h3>{{ title }}</h3>
 
-  <form class="form form-connection-create" method="post">
+  <form class="form form-connection form-connection-create" method="post">
     {% csrf_token %}
 
     {% include "connections_fields.html" %}
diff --git a/plinth/modules/networks/templates/connections_edit.html b/plinth/modules/networks/templates/connections_edit.html
index 8f95772a5..4a3725592 100644
--- a/plinth/modules/networks/templates/connections_edit.html
+++ b/plinth/modules/networks/templates/connections_edit.html
@@ -10,7 +10,7 @@
 
   <h3>{{ title }}</h3>
 
-  <form class="form form-connection-edit" method="post">
+  <form class="form form-connection form-connection-edit" method="post">
     {% csrf_token %}
 
     {% include "connections_fields.html" %}