diff --git a/ui/core.js b/ui/core.js
index 28e9841dd8a..224d12b1564 100644
--- a/ui/core.js
+++ b/ui/core.js
@@ -103,7 +103,7 @@ function focusable( element, isTabIndexNotNaN ) {
 		img = $( "img[usemap='#" + mapName + "']" )[ 0 ];
 		return !!img && visible( img );
 	}
-	return ( /input|select|textarea|button|object/.test( nodeName ) ?
+	return ( /^(input|select|textarea|button|object)$/.test( nodeName ) ?
 		!element.disabled :
 		"a" === nodeName ?
 			element.href || isTabIndexNotNaN :
diff --git a/ui/resizable.js b/ui/resizable.js
index 0671fb7b507..7eb747e76e2 100644
--- a/ui/resizable.js
+++ b/ui/resizable.js
@@ -104,7 +104,7 @@ $.widget("ui.resizable", $.ui.mouse, {
 		});
 
 		// Wrap the element if it cannot hold child nodes
-		if (this.element[0].nodeName.match(/canvas|textarea|input|select|button|img/i)) {
+		if (this.element[0].nodeName.match(/^(canvas|textarea|input|select|button|img)$/i)) {
 
 			this.element.wrap(
 				$("<div class='ui-wrapper' style='overflow: hidden;'></div>").css({
@@ -205,7 +205,7 @@ $.widget("ui.resizable", $.ui.mouse, {
 					this.handles[i] = this.element.children( this.handles[ i ] ).first().show();
 				}
 
-				if (this.elementIsWrapper && this.originalElement[0].nodeName.match(/textarea|input|select|button/i)) {
+				if (this.elementIsWrapper && this.originalElement[0].nodeName.match(/^(textarea|input|select|button)$/i)) {
 
 					axis = $(this.handles[i], this.element);