diff --git a/browser/fuel/test/Makefile.in b/browser/fuel/test/Makefile.in
index d2bc3fa5a4cd..b5e10f969b10 100644
--- a/browser/fuel/test/Makefile.in
+++ b/browser/fuel/test/Makefile.in
@@ -44,11 +44,12 @@ relativesrcdir = browser/fuel/test
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/rules.mk
 
+# browser_Browser.js is disabled, because it times out occasionally. See bug 458688.
+
 _BROWSER_FILES =browser_Application.js \
 		browser_ApplicationPrefs.js \
 		browser_ApplicationStorage.js \
 		browser_ApplicationQuitting.js \
-		browser_Browser.js \
 		browser_Bookmarks.js \
 		browser_Extensions.js \
 		ContentA.html \