diff --git a/js/ui/main.js b/js/ui/main.js
index 7232deb8b..b4e4687c7 100644
--- a/js/ui/main.js
+++ b/js/ui/main.js
@@ -446,7 +446,8 @@ function loadTheme() {
     if (_cssStylesheet != null)
         cssStylesheet = _cssStylesheet;
 
-    let theme = new St.Theme ({ application_stylesheet: cssStylesheet });
+    let theme = new St.Theme ({ application_stylesheet: cssStylesheet,
+                                default_stylesheet: _defaultCssStylesheet });
 
     if (previousTheme) {
         let customStylesheets = previousTheme.get_custom_stylesheets();