diff --git a/core/htmlparser/element.js b/core/htmlparser/element.js
index 971504d8acd..5e8a04790bd 100644
--- a/core/htmlparser/element.js
+++ b/core/htmlparser/element.js
@@ -229,6 +229,10 @@ CKEDITOR.htmlParser.cssStyle = function() {
 					if ( i == 1 )
 						attribsArray.push( [ a, value ] );
 					else if ( filter ) {
+						// Loop until name isn't modified.
+						// A little bit senseless, but IE would do that anyway
+						// because it iterates with for-in loop even over properties
+						// created during its run.
 						while ( true ) {
 							if ( !( newAttrName = filter.onAttributeName( a ) ) ) {
 								delete attributes[ a ];
diff --git a/core/htmlparser/filter.js b/core/htmlparser/filter.js
index e462695274f..05535a31718 100644
--- a/core/htmlparser/filter.js
+++ b/core/htmlparser/filter.js
@@ -146,7 +146,7 @@
 
 		if ( itemsLength ) {
 			// Find the index to insert the items at.
-			for ( i = 0; i < listLength && list[ i ].pri < priority; i++ ) {
+			for ( i = 0; i < listLength && list[ i ].pri <= priority; i++ ) {
 				/*jsl:pass*/
 			}