diff --git a/tests/plugins/inlinetoolbar/cssdefault.js b/tests/plugins/inlinetoolbar/cssdefault.js
index 4b03a36c371..0bba47f76ed 100644
--- a/tests/plugins/inlinetoolbar/cssdefault.js
+++ b/tests/plugins/inlinetoolbar/cssdefault.js
@@ -34,6 +34,7 @@
 
 	// We need to set up skin at the very beginning before files start to load.
 	CKEDITOR.skinName = 'moono';
+
 	// Overwrite prototype to simulate missing css file.
 	var oldFn = CKEDITOR.dom.document.prototype.appendStyleSheet;
 	CKEDITOR.dom.document.prototype.appendStyleSheet = function( cssFileUrl ) {
@@ -43,10 +44,11 @@
 		}
 	};
 
-
 	var tests = {
-		'test check moono skin usage': function( editor ) {
-
+		'test check default.css file usage when skin miss adequate css': function( editor ) {
+			if ( CKEDITOR.env.ie && CKEDITOR.env.version < 11 ) {
+				assert.ignore();
+			}
 			var panel = new CKEDITOR.ui.inlineToolbar( editor );
 			panel.addItems( {
 				bold: new CKEDITOR.ui.button( {
@@ -55,8 +57,8 @@
 				} )
 			} );
 			panel.attach( editor.editable().findOne( 'p' ) );
-			assert.areSame( 'rgb(248, 248, 248)', panel._view.parts.panel.getComputedStyle( 'background-color' ),
-				'Default skin background color seems to be incorrect.' );
+			assert.areSame( 'background-color:#f8f8f8;', CKEDITOR.tools.normalizeCssText( 'background-color:' + panel._view.parts.panel.getComputedStyle( 'background-color' ) + ';' ),
+				'Default skin background color is incorrect.' );
 		}
 	};
 
diff --git a/tests/plugins/inlinetoolbar/cssskin.js b/tests/plugins/inlinetoolbar/cssskin.js
index 54ecd5f6ffa..239c93a35ac 100644
--- a/tests/plugins/inlinetoolbar/cssskin.js
+++ b/tests/plugins/inlinetoolbar/cssskin.js
@@ -3,7 +3,6 @@
 
 ( function() {
 	'use strict';
-	// Please be aware that entire test suite has to use the same skin. That's why tests are separate between 2 files.
 
 	bender.editors = {
 		classic: {
@@ -37,7 +36,10 @@
 	CKEDITOR.skinName = 'moono';
 
 	var tests = {
-		'test check default css usage': function( editor ) {
+		'test check moono skin usage': function( editor ) {
+			if ( CKEDITOR.env.ie && CKEDITOR.env.version < 11 ) {
+				assert.ignore();
+			}
 
 			var panel = new CKEDITOR.ui.inlineToolbar( editor );
 			panel.addItems( {
@@ -47,8 +49,10 @@
 				} )
 			} );
 			panel.attach( editor.editable().findOne( 'p' ) );
-			assert.areSame( 'rgba(0, 0, 0, 0)', panel._view.parts.panel.getComputedStyle( 'background-color' ),
-				'Background color seems to be incorrect.' );
+			// IE use cke_reset styles, that' why there is transparent.
+			assert.areSame( CKEDITOR.env.ie ? 'background-color:transparent;' : 'background-color:#000000;',
+				CKEDITOR.tools.normalizeCssText( 'background-color:' + panel._view.parts.panel.getComputedStyle( 'background-color' ) + ';' ),
+				'Background color is incorrect.' );
 		}
 	};
 
diff --git a/tests/plugins/inlinetoolbar/manual/fallbackstyles.html b/tests/plugins/inlinetoolbar/manual/fallbackstyles.html
index ca205c73c2c..0ff238945d6 100644
--- a/tests/plugins/inlinetoolbar/manual/fallbackstyles.html
+++ b/tests/plugins/inlinetoolbar/manual/fallbackstyles.html
@@ -37,6 +37,9 @@
 </div>
 
 <script>
+	if ( CKEDITOR.env.ie && CKEDITOR.env.version < 11 ) {
+		bender.ignore();
+	}
 	function instanceReadyListener( evt ) {
 		var images = this.editable().find( 'img' ).toArray(),
 			panel = new CKEDITOR.ui.inlineToolbar( this );