diff --git a/apps/common/main/lib/view/OpenDialog.js b/apps/common/main/lib/view/OpenDialog.js
index 1157b7184..f70e6defd 100644
--- a/apps/common/main/lib/view/OpenDialog.js
+++ b/apps/common/main/lib/view/OpenDialog.js
@@ -53,12 +53,22 @@ define([
             var t = this,
                 _options = {};
 
+            var width, height;
+
+            if (options.preview) {
+                width = 414;
+                height = 277;
+            } else {
+                width = (options.type !== Asc.c_oAscAdvancedOptionsID.DRM) ? 340 : (options.warning ? 370 : 262);
+                height = (options.type == Asc.c_oAscAdvancedOptionsID.CSV) ? 190 : (options.warning ? 187 : 147);
+            }
+
             _.extend(_options,  {
                 closable        : false,
                 preview         : options.preview,
                 warning         : options.warning,
-                width           : (options.preview) ? 414 : ((options.type == Asc.c_oAscAdvancedOptionsID.DRM && options.warning) ? 370 : 262),
-                height          : (options.preview) ? 277 : ((options.type == Asc.c_oAscAdvancedOptionsID.CSV) ? 190 : (options.warning ? 187 : 147)),
+                width           : width,
+                height          : height,
                 header          : true,
                 cls             : 'open-dlg',
                 contentTemplate : '',
@@ -85,10 +95,10 @@ define([
                         '</div>',
                         '<% } %>',
                     '<% } else { %>',
-                        '<div style="display: inline-block; margin-bottom:15px;margin-right: 10px;">',
+                        '<div style="<% if (!!preview && type == Asc.c_oAscAdvancedOptionsID.CSV) { %>width: 230px;margin-right: 10px;display: inline-block;<% } else { %>width: 100%;<% } %>margin-bottom:15px;">',
                             '<label class="header">' + t.txtEncoding + '</label>',
                             '<div>',
-                            '<div id="id-codepages-combo" class="input-group-nr" style="display: inline-block; vertical-align: middle;"></div>',
+                            '<div id="id-codepages-combo" class="input-group-nr" style="width: 100%; display: inline-block; vertical-align: middle;"></div>',
                             '</div>',
                         '</div>',
                         '<% if (type == Asc.c_oAscAdvancedOptionsID.CSV) { %>',
@@ -257,16 +267,16 @@ define([
                 _.template([
                     '<% _.each(items, function(item) { %>',
                     '<li id="<%= item.id %>" data-value="<%= item.value %>"><a tabindex="-1" type="menuitem">',
-                    '<div style="display: inline-block;"><%= item.displayValue %></div>',
-                    '<label style="text-align: right;width:' + lcid_width + 'px;"><%= item.lcid %></label>',
+                        '<div style="display: inline-block;"><%= item.displayValue %></div>',
+                        '<label style="text-align: right;width:' + lcid_width + 'px;"><%= item.lcid %></label>',
                     '</a></li>',
                     '<% }); %>'
                 ].join(''));
 
             this.cmbEncoding = new Common.UI.ComboBox({
                 el: $('#id-codepages-combo', this.$window),
-                style: 'width: 230px;',
-                menuStyle: 'min-width: 230px; max-height: 200px;',
+                style: 'width: 100%;',
+                menuStyle: 'min-width: 100%; max-height: 200px;',
                 cls: 'input-group-nr',
                 menuCls: 'scrollable-menu',
                 data: listItems,
@@ -284,7 +294,7 @@ define([
                 var ul = this.cmbEncoding.cmpEl.find('ul'),
                     a = ul.find('li:nth(0) a'),
                     width = ul.width() - parseInt(a.css('padding-left')) - parseInt(a.css('padding-right')) - 50;
-                ul.find('li div').width(width + 10);
+                ul.find('li div').width(width);
             }
 
             if (this.type == Asc.c_oAscAdvancedOptionsID.CSV) {