diff --git a/lib/bunyan.js b/lib/bunyan.js
index 3d15820..fb4044b 100644
--- a/lib/bunyan.js
+++ b/lib/bunyan.js
@@ -282,7 +282,7 @@ function Logger(options, _childOptions, _childSimple) {
     s = objCopy(s);
 
     // Implicit 'type' from other args.
-    type = s.type;
+    var type = s.type;
     if (!s.type) {
       if (s.stream) {
         s.type = "stream";