diff --git a/mozilla/xpinstall/src/nsRegisterItem.cpp b/mozilla/xpinstall/src/nsRegisterItem.cpp
index 8edcfc811dc..633c4deb33d 100644
--- a/mozilla/xpinstall/src/nsRegisterItem.cpp
+++ b/mozilla/xpinstall/src/nsRegisterItem.cpp
@@ -90,8 +90,6 @@ PRInt32 nsRegisterItem::Prepare()
 
         if (!isDir)
             mURL.Append("!/");
-        else
-            mURL.Append("/");
     }
 
     return nsInstall::SUCCESS;