diff --git a/Phraseanet-production-client/dist/production.js b/Phraseanet-production-client/dist/production.js
index cf0f4dbdea..a3af1b0ec3 100644
--- a/Phraseanet-production-client/dist/production.js
+++ b/Phraseanet-production-client/dist/production.js
@@ -22526,9 +22526,8 @@ var recordEditorService = function recordEditorService(services) {
             }
         }).on('mouseup mousedown keyup keydown', '.editor-thesaurus-search', function (event) {
             var currentField = options.fieldCollection.getActiveField();
-            var method = (0, _jquery2.default)(event.currentTarget).siblings('select.thesaurus-search-operator').val();
 
-            onUserInputComplete(event, $searchThesaurus.val(), currentField, method);
+            onUserInputComplete(event, $searchThesaurus.val(), currentField);
         });
     };
 
@@ -23887,9 +23886,9 @@ var recordEditorService = function recordEditorService(services) {
      * @param field
      */
     var onUserInputComplete = function onUserInputComplete(event, value, field) {
-        var method = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 'begins';
-
         if (value !== '') {
+            var method = (0, _jquery2.default)('div#EDIT_MID').find('select.thesaurus-search-operator').val();
+
             recordEditorEvents.emit('recordEditor.userInputValue', {
                 event: event,
                 value: value,
diff --git a/Phraseanet-production-client/dist/production.min.js b/Phraseanet-production-client/dist/production.min.js
index cf0f4dbdea..a3af1b0ec3 100644
--- a/Phraseanet-production-client/dist/production.min.js
+++ b/Phraseanet-production-client/dist/production.min.js
@@ -22526,9 +22526,8 @@ var recordEditorService = function recordEditorService(services) {
             }
         }).on('mouseup mousedown keyup keydown', '.editor-thesaurus-search', function (event) {
             var currentField = options.fieldCollection.getActiveField();
-            var method = (0, _jquery2.default)(event.currentTarget).siblings('select.thesaurus-search-operator').val();
 
-            onUserInputComplete(event, $searchThesaurus.val(), currentField, method);
+            onUserInputComplete(event, $searchThesaurus.val(), currentField);
         });
     };
 
@@ -23887,9 +23886,9 @@ var recordEditorService = function recordEditorService(services) {
      * @param field
      */
     var onUserInputComplete = function onUserInputComplete(event, value, field) {
-        var method = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 'begins';
-
         if (value !== '') {
+            var method = (0, _jquery2.default)('div#EDIT_MID').find('select.thesaurus-search-operator').val();
+
             recordEditorEvents.emit('recordEditor.userInputValue', {
                 event: event,
                 value: value,
diff --git a/Phraseanet-production-client/src/components/record/recordEditor/index.js b/Phraseanet-production-client/src/components/record/recordEditor/index.js
index 44012a958f..af2846755b 100644
--- a/Phraseanet-production-client/src/components/record/recordEditor/index.js
+++ b/Phraseanet-production-client/src/components/record/recordEditor/index.js
@@ -219,9 +219,8 @@ const recordEditorService = services => {
             })
             .on('mouseup mousedown keyup keydown', '.editor-thesaurus-search', (event) => {
                 let currentField = options.fieldCollection.getActiveField();
-                let method = $(event.currentTarget).siblings('select.thesaurus-search-operator').val();
 
-                onUserInputComplete(event, $searchThesaurus.val(), currentField, method);
+                onUserInputComplete(event, $searchThesaurus.val(), currentField);
             })
         ;
     };
@@ -1773,8 +1772,10 @@ const recordEditorService = services => {
      * @param value
      * @param field
      */
-    let onUserInputComplete = (event, value, field, method = 'begins') => {
+    let onUserInputComplete = (event, value, field) => {
         if (value !== '') {
+            let method = $('div#EDIT_MID').find('select.thesaurus-search-operator').val();
+
             recordEditorEvents.emit('recordEditor.userInputValue', {
                 event,
                 value,
diff --git a/lib/Alchemy/Phrasea/Controller/Thesaurus/ThesaurusXmlHttpController.php b/lib/Alchemy/Phrasea/Controller/Thesaurus/ThesaurusXmlHttpController.php
index f2e4fa47c0..509ef3ab64 100644
--- a/lib/Alchemy/Phrasea/Controller/Thesaurus/ThesaurusXmlHttpController.php
+++ b/lib/Alchemy/Phrasea/Controller/Thesaurus/ThesaurusXmlHttpController.php
@@ -880,6 +880,8 @@ class ThesaurusXmlHttpController extends Controller
 
     public function openBranchesHtml(Request $request)
     {
+        $this->app['session']->set('editor_thesaurus_operator', $request->get('method'));
+
         if (null === $mod = $request->get('mod')) {
             $mod = 'TREE';
         }
@@ -1458,6 +1460,8 @@ class ThesaurusXmlHttpController extends Controller
             return $this->app->json(['success' => false , 'message' => 'invalid form token'], 403);
         }
 
+        $this->app['session']->set('workzone_thesaurus_operator', $request->get('method'));
+
         $lng = $request->get('lng');
 
         $html = '';
diff --git a/templates/web/prod/actions/edit_default.html.twig b/templates/web/prod/actions/edit_default.html.twig
index 696110d1f9..126f0afd71 100644
--- a/templates/web/prod/actions/edit_default.html.twig
+++ b/templates/web/prod/actions/edit_default.html.twig
@@ -272,8 +272,16 @@
                 {% if thesaurus %}
                     <div id='TH_Ofull'>
                         <select class="thesaurus-search-operator" tabindex="-1" aria-hidden="true" style="width: 106px; margin-left:10px; display: none;">
-                            <option value="begins">{{ 'begins with' | trans }}</option>
-                            <option value="contains">{{ 'contains' | trans }}</option>
+                            <option value="begins"
+                                    {% if app['session'].has('editor_thesaurus_operator') and app['session'].get('editor_thesaurus_operator') == "begins" %}
+                                        selected
+                                    {% endif %}
+                            >{{ 'begins with' | trans }}</option>
+                            <option value="contains"
+                                    {% if app['session'].has('editor_thesaurus_operator') and app['session'].get('editor_thesaurus_operator') == "contains" %}
+                                        selected
+                                    {% endif %}
+                            >{{ 'contains' | trans }}</option>
                         </select>
                         <input type="text" class="editor-thesaurus-search" style="margin-top: 10px; margin-left: 10px; display: none;">
                         <div class='thesaurus edit-thesaurus-action'>
diff --git a/templates/web/prod/tab_thesaurus.html.twig b/templates/web/prod/tab_thesaurus.html.twig
index b78904d282..069cbf1acf 100644
--- a/templates/web/prod/tab_thesaurus.html.twig
+++ b/templates/web/prod/tab_thesaurus.html.twig
@@ -21,8 +21,16 @@
                     <form class="gform form-inline thesaurus-filter-submit-action">
                         <div class="input-append">
                             <select class="thesaurus-search-operator" tabindex="-1" aria-hidden="true" style="width: 25%; margin-left:10px; height:39px;">
-                                <option value="begins">{{ 'begins with' | trans }}</option>
-                                <option value="contains">{{ 'contains' | trans }}</option>
+                                <option value="begins"
+                                        {% if app['session'].has('workzone_thesaurus_operator') and app['session'].get('workzone_thesaurus_operator') == "begins" %}
+                                            selected
+                                        {% endif %}
+                                >{{ 'begins with' | trans }}</option>
+                                <option value="contains"
+                                        {% if app['session'].has('workzone_thesaurus_operator') and app['session'].get('workzone_thesaurus_operator') == "contains" %}
+                                            selected
+                                        {% endif %}
+                                >{{ 'contains' | trans }}</option>
                             </select>
                             <input type="text" name="search_value" class="input-medium thesaurus-filter-suggest-action" style="width: 55%; float:none;"/>
                             <button type="submit" class="th_ok btn btn-inverse" style="width:12%; float:none;">