diff --git a/browser/base/content/browser.xul b/browser/base/content/browser.xul
index 24bc2ee9c6..f85aee63fd 100644
--- a/browser/base/content/browser.xul
+++ b/browser/base/content/browser.xul
@@ -9,7 +9,9 @@
 <?xml-stylesheet href="chrome://browser/content/browser.css" type="text/css"?>
 <?xml-stylesheet href="chrome://browser/content/places/places.css" type="text/css"?>
 <?xml-stylesheet href="chrome://browser/content/usercontext/usercontext.css" type="text/css"?>
+#ifdef MOZ_DEVTOOLS
 <?xml-stylesheet href="chrome://devtools/skin/devtools-browser.css" type="text/css"?>
+#endif
 <?xml-stylesheet href="chrome://browser/skin/controlcenter/panel.css" type="text/css"?>
 <?xml-stylesheet href="chrome://browser/skin/customizableui/panelUI.css" type="text/css"?>
 <?xml-stylesheet href="chrome://browser/skin/" type="text/css"?>