diff --git a/ui (gen4)/features/filesystem.js b/ui (gen4)/features/filesystem.js
index 33b01954..486924a1 100755
--- a/ui (gen4)/features/filesystem.js	
+++ b/ui (gen4)/features/filesystem.js	
@@ -485,7 +485,10 @@ module.FileSystemLoaderUI = core.ImageGridFeatures.Feature({
 	doc: '',
 
 	tag: 'ui-fs-loader',
-	depends: ['fs-loader'],
+	depends: [
+		'ui',
+		'fs-loader'
+	],
 
 	actions: FileSystemLoaderUIActions,
 })
diff --git a/ui (gen4)/lib/features.js b/ui (gen4)/lib/features.js
index 015fc027..1c92970c 100755
--- a/ui (gen4)/lib/features.js	
+++ b/ui (gen4)/lib/features.js	
@@ -311,6 +311,9 @@ module.FeatureSet = {
 	// XXX add ability to remove features by prefixing a '-' to its name
 	// 		...if one -<feature> is present, remove all instances of 
 	// 		<feature>
+	// XXX .buildFeatureList() is slow and can be a bottleneck for large
+	// 		numbers of features... might be a good idea to take a look at
+	// 		this sometime...
 	buildFeatureList: function(obj, lst, auto_include, depth){
 		var that = this
 		obj = obj || {}