Index: wp-content/themes/twentytwelve/js/theme-customizer.js
===================================================================
--- wp-content/themes/twentytwelve/js/theme-customizer.js	(revision 23400)
+++ wp-content/themes/twentytwelve/js/theme-customizer.js	(working copy)
@@ -9,12 +9,12 @@
 	// Site title and description.
 	wp.customize( 'blogname', function( value ) {
 		value.bind( function( to ) {
-			$( '.site-title a' ).html( to );
+			$( '.site-title a' ).text( to );
 		} );
 	} );
 	wp.customize( 'blogdescription', function( value ) {
 		value.bind( function( to ) {
-			$( '.site-description' ).html( to );
+			$( '.site-description' ).text( to );
 		} );
 	} );
 
Index: wp-content/themes/twentyeleven/inc/theme-customizer.js
===================================================================
--- wp-content/themes/twentyeleven/inc/theme-customizer.js	(revision 23400)
+++ wp-content/themes/twentyeleven/inc/theme-customizer.js	(working copy)
@@ -1,12 +1,12 @@
 ( function( $ ){
 	wp.customize( 'blogname', function( value ) {
 		value.bind( function( to ) {
-			$( '#site-title a' ).html( to );
+			$( '#site-title a' ).text( to );
 		} );
 	} );
 	wp.customize( 'blogdescription', function( value ) {
 		value.bind( function( to ) {
-			$( '#site-description' ).html( to );
+			$( '#site-description' ).text( to );
 		} );
 	} );
 } )( jQuery );
\ No newline at end of file