diff --git a/addons/web_calendar/static/src/js/calendar.js b/addons/web_calendar/static/src/js/calendar.js
index e42ec2ba1c8..3c9a8a6fa9d 100644
--- a/addons/web_calendar/static/src/js/calendar.js
+++ b/addons/web_calendar/static/src/js/calendar.js
@@ -414,17 +414,22 @@ instance.web_calendar.CalendarView = instance.web.View.extend({
             self.slow_create(event_id, event_obj);
         });
     },
-    slow_create: function(event_id, event_obj) {
-        var self = this;
-        var view_id = false;
-        var title = this.name;
+    get_form_popup_infos: function() {
         var parent = this.getParent();
+        var infos = {
+            view_id: false,
+            title: this.name,
+        };
         if (parent instanceof instance.web.ViewManager) {
-            view_id = parent.get_view_id('form');
-            if (parent instanceof instance.web.ViewManagerAction) {
-                title = parent.get_action_manager().get_title();
+            infos.view_id = parent.get_view_id('form');
+            if (parent instanceof instance.web.ViewManagerAction && parent.action && parent.action.name) {
+                infos.title = parent.action.name;
             }
         }
+        return infos;
+    },
+    slow_create: function(event_id, event_obj) {
+        var self = this;
         if (this.current_mode() === 'month') {
             event_obj['start_date'].addHours(8);
             if (event_obj._length === 1) {
@@ -440,10 +445,11 @@ instance.web_calendar.CalendarView = instance.web.View.extend({
         });
         var something_saved = false;
         var pop = new instance.web.form.FormOpenPopup(this);
+        var pop_infos = this.get_form_popup_infos();
         pop.show_element(this.dataset.model, null, this.dataset.get_context(defaults), {
-            title: _t("Create: ") + ' ' + title,
+            title: _.str.sprintf(_t("Create: %s"), pop_infos.title),
             disable_multiple_selection: true,
-            view_id: view_id,
+            view_id: pop_infos.view_id,
         });
         pop.on('closed', self, function() {
             if (!something_saved) {
@@ -460,15 +466,6 @@ instance.web_calendar.CalendarView = instance.web.View.extend({
     open_event: function(event_id) {
         var self = this;
         var index = this.dataset.get_id_index(event_id);
-        var view_id = false;
-        var title = this.name;
-        var parent = this.getParent();
-        if (parent instanceof instance.web.ViewManager) {
-            view_id = parent.get_view_id('form');
-            if (parent instanceof instance.web.ViewManagerAction) {
-                title = parent.get_action_manager().get_title();
-            }
-        }
         if (index === null) {
             // Some weird behaviour in dhtmlx scheduler could lead to this case
             // eg: making multiple days event in week view, dhtmlx doesn't trigger eventAdded !!??
@@ -484,10 +481,11 @@ instance.web_calendar.CalendarView = instance.web.View.extend({
             });
         } else {
             var pop = new instance.web.form.FormOpenPopup(this);
+            var pop_infos = this.get_form_popup_infos();
             var id_from_dataset = this.dataset.ids[index]; // dhtmlx scheduler loses id's type
             pop.show_element(this.dataset.model, id_from_dataset, this.dataset.get_context(), {
-                title: _t("Edit: ") + title,
-                view_id: view_id,
+                title: _.str.sprintf(_t("Edit: %s"), pop_infos.title),
+                view_id: pop_infos.view_id,
             });
             pop.on('write_completed', self, function(){
                 self.reload_event(id_from_dataset);