diff --git a/addons/survey/static/src/js/survey_session_manage.js b/addons/survey/static/src/js/survey_session_manage.js
index aacca6a1565..ff094745bec 100644
--- a/addons/survey/static/src/js/survey_session_manage.js
+++ b/addons/survey/static/src/js/survey_session_manage.js
@@ -496,16 +496,18 @@ publicWidget.registry.SurveySessionManage = publicWidget.Widget.extend(SurveyPre
 
         return self.orm.read(
             "survey.survey",
-            [[self.surveyId], ['session_answer_count']]
+            [self.surveyId],
+            ['session_answer_count'],
         ).then(function (result) {
             if (result && result.length === 1){
                 self.$('.o_survey_session_attendees_count').text(
                     result[0].session_answer_count
                 );
             }
-        }, function () {
+        }, function (err) {
             // on failure, stop refreshing
             clearInterval(self.attendeesRefreshInterval);
+            console.error(err);
         });
     },
 
diff --git a/addons/survey/static/tests/tours/survey_tour_session_start.js b/addons/survey/static/tests/tours/survey_tour_session_start.js
index f357ca1bd70..1e43ffa8cbc 100644
--- a/addons/survey/static/tests/tours/survey_tour_session_start.js
+++ b/addons/survey/static/tests/tours/survey_tour_session_start.js
@@ -15,7 +15,24 @@ registry.category("web_tour.tours").add('test_survey_session_start_tour', {
     trigger: 'button[name="action_open_session_manager"]',
 }, {
     trigger: '.o_survey_session_attendees_count:contains("3")',
-    run: function () {} // check attendees count
+    run: function () {
+        /* We want to test 2 things: (1) that the attendees count is right
+           on the rendered xml template and (2) that the attendees count
+           gets correctly updated every 2 seconds via JS.
+
+           This step did verify the one on the xml template, we now change
+           the value back to 0 to test that in 2 seconds it'll be updated
+           by JS.
+
+           The "waitrpc" class just serves to rule out concurrency issues
+           between this step's run and the next step's trigger. */
+        const elem = document.querySelector('.o_survey_session_attendees_count');
+        elem.classList.add("waitrpc");
+        elem.textContent = '0';
+    }
+}, {
+    trigger: '.o_survey_session_attendees_count.waitrpc:contains("3")',
+    isCheck: true
 }, {
     trigger: 'h1',
     run: function () {