From b067a03f27be6f1d7db549ad62246b6e6e0c5940 Mon Sep 17 00:00:00 2001
From: Stefan Lance <stefan@lances.net>
Date: Fri, 11 Sep 2015 11:51:08 -0500
Subject: Add exception subclass

---
 lib/bundler/source/rubygems.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/bundler/source/rubygems.rb b/lib/bundler/source/rubygems.rb
index 925b6e4e42..508922f04d 100644
--- a/lib/bundler/source/rubygems.rb
+++ b/lib/bundler/source/rubygems.rb
@@ -483,7 +483,7 @@ module Bundler
       # @return [Pathname] The global cache path.
       #
       def download_cache_path(*paths)
-        raise "Caching is only possible for sources with one URL" if remotes.size > 1
+        raise InstallError, "Caching is only possible for sources with one URL" if remotes.size > 1
         uri = remotes.first
         return unless uri
         port = uri.port unless uri.port == 80
-- 
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