diff --git a/plugins/provisioners/shell/config.rb b/plugins/provisioners/shell/config.rb
index 1e1db2270..87dfa83c2 100644
--- a/plugins/provisioners/shell/config.rb
+++ b/plugins/provisioners/shell/config.rb
@@ -58,7 +58,7 @@ module VagrantPlugins
       end
 
       def remote?
-        path =~ URI::regexp(["ftp", "http", "https"])
+        path =~ URI.regexp(["ftp", "http", "https"])
       end
     end
   end