diff --git a/apps/documenteditor/main/app/controller/Main.js b/apps/documenteditor/main/app/controller/Main.js
index 2c9598d1b..018afb035 100644
--- a/apps/documenteditor/main/app/controller/Main.js
+++ b/apps/documenteditor/main/app/controller/Main.js
@@ -898,6 +898,8 @@ define([
                 me.hidePreloader();
                 me.onLongActionEnd(Asc.c_oAscAsyncActionType['BlockInteraction'], LoadingDocument);
 
+                Common.Utils.InternalSettings.set("de-settings-datetime-default", Common.localStorage.getItem("de-settings-datetime-default"));
+
                 /** coauthoring begin **/
                 this.isLiveCommenting = Common.localStorage.getBool("de-settings-livecomment", true);
                 Common.Utils.InternalSettings.set("de-settings-livecomment", this.isLiveCommenting);
diff --git a/apps/documenteditor/main/app/view/DateTimeDialog.js b/apps/documenteditor/main/app/view/DateTimeDialog.js
index 1ddd84b95..bc9dc93f9 100644
--- a/apps/documenteditor/main/app/view/DateTimeDialog.js
+++ b/apps/documenteditor/main/app/view/DateTimeDialog.js
@@ -140,14 +140,14 @@ define([
                     callback: _.bind(function(btn) {
                         if (btn == 'yes') {
                             this.defaultFormats[this.cmbLang.getValue()] = rec ? rec.get('format') : '';
-                            this.api.asc_setDefaultDateTimeFormat(this.defaultFormats);
+                            // this.api.asc_setDefaultDateTimeFormat(this.defaultFormats);
                             var arr = [];
                             for (var name in this.defaultFormats) {
                                 if (name) {
-                                    arr.push(name + ' ' + this.defaultFormats[name]);
+                                    arr.push({lang: name, format: this.defaultFormats[name]});
                                 }
                             }
-                            var value = arr.join(';');
+                            var value = JSON.stringify(arr);
                             Common.localStorage.setItem("de-settings-datetime-default", value);
                             Common.Utils.InternalSettings.set("de-settings-datetime-default", value);
                         }
@@ -162,11 +162,11 @@ define([
         afterRender: function() {
             var me = this,
                 value =  Common.Utils.InternalSettings.get("de-settings-datetime-default"),
-                arr = (value) ? value.split(';') : [];
+                arr = value ? JSON.parse(value) : [];
             this.defaultFormats = [];
             arr.forEach(function(item){
-                var pair = item.split(' ');
-                me.defaultFormats[parseInt(pair[0])] = pair[1];
+                if (item.lang)
+                    me.defaultFormats[parseInt(item.lang)] = item.format;
             });
 
             this._setDefaults();