Index: src/wp-includes/js/tinymce/wp-tinymce-schema.js
===================================================================
--- src/wp-includes/js/tinymce/wp-tinymce-schema.js	(revision 26078)
+++ src/wp-includes/js/tinymce/wp-tinymce-schema.js	(working copy)
@@ -416,7 +416,7 @@
 		/**
 		 * WordPress core uses a sane schema in place of the default "HTML5" schema.
 		 */
-		schemaItems = settings.schema == "html5" ? getSaneSchema() : getHTML4();
+		schemaItems = settings.schema == 'html5' ? getSaneSchema() : getHTML4();
 
 		// Allow all elements and attributes if verify_html is set to false
 		if (settings.verify_html === false)
@@ -693,7 +693,7 @@
 			});
 
 			// Switch these on HTML4
-			if (settings.schema != "html5") {
+			if (settings.schema != 'html5') {
 				each(split('strong/b,em/i'), function(item) {
 					item = split(item, '/');
 					elements[item[1]].outputName = item[0];