diff --git a/searx/search.py b/searx/search.py
index 427da3bab..0324d4aaf 100644
--- a/searx/search.py
+++ b/searx/search.py
@@ -384,12 +384,17 @@ class Search(object):
             for pd_name, pd in self.request_data.items():
                 if pd_name.startswith('category_'):
                     category = pd_name[9:]
+
                     # if category is not found in list, skip
                     if category not in categories:
                         continue
 
-                    # add category to list
-                    self.categories.append(category)
+                    if pd != 'off':
+                        # add category to list
+                        self.categories.append(category)
+                    elif category in self.categories:
+                        # remove category from list if property is set to 'off'
+                        self.categories.remove(category)
 
             # if no category is specified for this search,
             # using user-defined default-configuration which
diff --git a/searx/static/themes/oscar/css/oscar.min.css b/searx/static/themes/oscar/css/oscar.min.css
index b8d6fba15..72be92c46 100644
Binary files a/searx/static/themes/oscar/css/oscar.min.css and b/searx/static/themes/oscar/css/oscar.min.css differ
diff --git a/searx/static/themes/oscar/less/oscar/checkbox.less b/searx/static/themes/oscar/less/oscar/checkbox.less
index 712e53d49..6428b36ed 100644
--- a/searx/static/themes/oscar/less/oscar/checkbox.less
+++ b/searx/static/themes/oscar/less/oscar/checkbox.less
@@ -1,9 +1,9 @@
 // Hide element if checkbox is checked
-input[type=checkbox]:checked ~ .label_hide_if_checked {
+input[type=checkbox]:checked + .label_hide_if_checked, input[type=checkbox]:checked + .label_hide_if_not_checked + .label_hide_if_checked {
   display:none;
 }
 
 // Hide element if checkbox is not checked
-input[type=checkbox]:not(:checked) ~ .label_hide_if_not_checked {
+input[type=checkbox]:not(:checked) + .label_hide_if_not_checked, input[type=checkbox]:not(:checked) + .label_hide_if_checked + .label_hide_if_not_checked {
   display:none;
 }
diff --git a/searx/templates/oscar/base.html b/searx/templates/oscar/base.html
index 466756b6f..c0393a66d 100644
--- a/searx/templates/oscar/base.html
+++ b/searx/templates/oscar/base.html
@@ -36,7 +36,8 @@
     </script>
     <noscript>
         <style type="text/css">
-            .tab-content > .active_if_nojs {display: block;}
+            .tab-content > .active_if_nojs, .active_if_nojs {display: block;}
+            .margin_top_if_nojs {margin-top: 20px;}
             .hide_if_nojs {display: none !important;overflow:none !important;}
         </style>
     </noscript>
diff --git a/searx/templates/oscar/categories.html b/searx/templates/oscar/categories.html
index 82ddcf686..f38cce5bd 100644
--- a/searx/templates/oscar/categories.html
+++ b/searx/templates/oscar/categories.html
@@ -1,6 +1,22 @@
-<div id="categories" class="btn-group btn-toggle" data-toggle="buttons">
+<!-- used if scripts are disabled -->
+<noscript>
+<div id="categories" class="btn-group btn-toggle">
+{% for category in categories %}
+    <!--<div class="checkbox">-->
+        <input class="hidden" type="checkbox" id="checkbox_{{ category|replace(' ', '_') }}_nojs" name="category_{{ category }}" {% if category in selected_categories %}checked="checked"{% endif %} />
+        <label class="btn btn-sm btn-primary active label_hide_if_not_checked" for="checkbox_{{ category|replace(' ', '_') }}_nojs">{{ _(category) }}</label>
+        <label class="btn btn-sm btn-default label_hide_if_checked" for="checkbox_{{ category|replace(' ', '_') }}_nojs">{{ _(category) }}</label>
+    <!--</div>-->
+    {% if category in selected_categories %}<input class="hidden" type="checkbox" id="checkbox_{{ category|replace(' ', '_') }}_dis_activation" name="category_{{ category }}" value="off" checked="checked"/>{% endif %}
+{% endfor %}
+</div>
+</noscript>
+
+<div id="categories" class="btn-group btn-toggle hide_if_nojs" data-toggle="buttons">
 {% for category in categories %}
     <label class="btn btn-sm {% if category in selected_categories %}btn-primary active{% else %}btn-default{% endif %}" data-btn-class="primary">
         <input class="hidden" type="checkbox" id="checkbox_{{ category|replace(' ', '_') }}" name="category_{{ category }}" {% if category in selected_categories %}checked="checked"{% endif %} />{{ _(category) }}</label>
 {% endfor %}
 </div>
+
+
diff --git a/searx/templates/oscar/search_full.html b/searx/templates/oscar/search_full.html
index 673f23969..5818286ec 100644
--- a/searx/templates/oscar/search_full.html
+++ b/searx/templates/oscar/search_full.html
@@ -8,8 +8,8 @@
         </span>
     </div>
 
-    <button type="button" class="btn btn-link btn-collapse center-block collapsed" data-toggle="collapse" data-target="#search_categories" data-btn-text-collapsed="{{ _('Show search filters') }}" data-btn-text-not-collapsed="{{ _('Hide search filters') }}">{{ _('Show search filters') }}</button>
-    <div class="row collapse" id="search_categories">
+    <button type="button" class="btn btn-link btn-collapse center-block collapsed hide_if_nojs" data-toggle="collapse" data-target="#search_categories" data-btn-text-collapsed="{{ _('Show search filters') }}" data-btn-text-not-collapsed="{{ _('Hide search filters') }}">{{ _('Show search filters') }}</button>
+    <div class="row collapse active_if_nojs margin_top_if_nojs" id="search_categories">
         <div class="col-md-12 text-center">
             {% include 'oscar/categories.html' %}
         </div>