diff --git a/apps/documenteditor/main/app/view/LeftMenu.js b/apps/documenteditor/main/app/view/LeftMenu.js
index dce3c66d5..9b9ee6397 100644
--- a/apps/documenteditor/main/app/view/LeftMenu.js
+++ b/apps/documenteditor/main/app/view/LeftMenu.js
@@ -136,6 +136,7 @@ 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 **/
 
@@ -174,6 +175,11 @@ 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.btnAbout.toggle(false);
diff --git a/apps/spreadsheeteditor/main/app/view/LeftMenu.js b/apps/spreadsheeteditor/main/app/view/LeftMenu.js
index 1070aa59e..b451e0c46 100644
--- a/apps/spreadsheeteditor/main/app/view/LeftMenu.js
+++ b/apps/spreadsheeteditor/main/app/view/LeftMenu.js
@@ -126,6 +126,7 @@ 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 **/
 
@@ -163,6 +164,11 @@ define([
             Common.NotificationCenter.trigger('layout:changed', 'leftmenu');
         },
 
+        onBtnCommentsToggle: function(btn, state) {
+            if (!state)
+                this.fireEvent('comments:hide', this);
+        },
+
         onBtnMenuClick: function(btn, e) {
             this.btnAbout.toggle(false);