diff --git a/node_modules/vfs-child/parent.js b/node_modules/vfs-child/parent.js
index 2c1dc7a9..d51fca64 100644
--- a/node_modules/vfs-child/parent.js
+++ b/node_modules/vfs-child/parent.js
@@ -49,11 +49,11 @@ function Parent(fsOptions) {
         }
         
         function done(err, vfs) {
-            if (!child) return;
+            if (!callback) return;
             child.removeListener("error", done);
             child.on("error", function ignore(err) {});
-            child = null;
             callback(err, vfs);
+            callback = null;
         }
     }