diff --git a/core/modules/startup.js b/core/modules/startup.js
index f401765cf..4cee81be0 100644
--- a/core/modules/startup.js
+++ b/core/modules/startup.js
@@ -90,7 +90,8 @@ exports.startup = function() {
 			$tw.crypto.setPassword(null);
 		});
 		// Apply stylesheets
-		$tw.utils.each($tw.modules.types.stylesheet,function(moduleInfo,title) {
+		var stylesheetTiddlers = $tw.wiki.filterTiddlers("[tag[$:/tags/stylesheet]]");
+		$tw.utils.each(stylesheetTiddlers,function(title,index) {
 			// Stylesheets don't refresh, yet
 			var parser = $tw.wiki.parseTiddler(title),
 				renderTree = new $tw.WikiRenderTree(parser,{wiki: $tw.wiki});
diff --git a/themes/tiddlywiki/snowwhite/base.tid b/themes/tiddlywiki/snowwhite/base.tid
index 4415b622a..ed6f194ec 100644
--- a/themes/tiddlywiki/snowwhite/base.tid
+++ b/themes/tiddlywiki/snowwhite/base.tid
@@ -1,5 +1,5 @@
 title: $:/core/styles/base
-module-type: stylesheet
+tags: [[$:/tags/stylesheet]]
 
 \rules only filteredtranscludeinline transcludeinline macrodef macrocallinline
 \define border-radius(radius)