diff --git a/config-defs.js b/config-defs.js
index 9eca3e9..91e3202 100644
--- a/config-defs.js
+++ b/config-defs.js
@@ -364,4 +364,5 @@ exports.shorthands =
   , y : ["--yes"]
   , n : ["--no-yes"]
   , B : ["--save-bundle"]
+  , C : ["--prefix"]
   }