diff --git a/rdf/tests/dsds/moz.build b/rdf/tests/dsds/moz.build
index ad75a1cd1983..4574e6747108 100644
--- a/rdf/tests/dsds/moz.build
+++ b/rdf/tests/dsds/moz.build
@@ -14,6 +14,6 @@ LIBRARY_NAME = 'rdfdsds'
 IS_COMPONENT = True
 
 RESOURCE_FILES.samples.rdf += [
-    'DataSourceViewer.xul',
     'DataSourceViewer.css',
+    'DataSourceViewer.xul',
 ]