diff --git a/apps/documenteditor/main/app/view/LeftMenu.js b/apps/documenteditor/main/app/view/LeftMenu.js
index d85aafee2..2e12e3027 100644
--- a/apps/documenteditor/main/app/view/LeftMenu.js
+++ b/apps/documenteditor/main/app/view/LeftMenu.js
@@ -145,6 +145,7 @@ define([
             this.btnChat.hide();
 
             this.btnComments.on('click',        _.bind(this.onBtnMenuClick, this));
+            this.btnComments.on('toggle',       _.bind(this.onBtnCommentsToggle, this));
             this.btnChat.on('click',            _.bind(this.onBtnMenuClick, this));
             /** coauthoring end **/
 
@@ -185,6 +186,11 @@ define([
                 Common.NotificationCenter.trigger('layout:changed', 'leftmenu');
         },
 
+        onBtnCommentsToggle: function(btn, state) {
+            if (!state)
+                this.fireEvent('comments:hide', this);
+        },
+
         onBtnMenuClick: function(btn, e) {
             this.supressEvents = true;
             this.btnFile.toggle(false);
diff --git a/apps/spreadsheeteditor/main/app/view/LeftMenu.js b/apps/spreadsheeteditor/main/app/view/LeftMenu.js
index fe6993d63..b0925d031 100644
--- a/apps/spreadsheeteditor/main/app/view/LeftMenu.js
+++ b/apps/spreadsheeteditor/main/app/view/LeftMenu.js
@@ -135,6 +135,7 @@ define([
             this.btnChat.hide();
 
             this.btnComments.on('click',        _.bind(this.onBtnMenuClick, this));
+            this.btnComments.on('toggle',       _.bind(this.onBtnCommentsToggle, this));
             this.btnChat.on('click',            _.bind(this.onBtnMenuClick, this));
             /** coauthoring end **/
 
@@ -177,6 +178,11 @@ define([
             Common.NotificationCenter.trigger('layout:changed', 'leftmenu');
         },
 
+        onBtnCommentsToggle: function(btn, state) {
+            if (!state)
+                this.fireEvent('comments:hide', this);
+        },
+
         onBtnMenuClick: function(btn, e) {
             this.btnFile.toggle(false);
             this.btnAbout.toggle(false);