diff --git a/lib/MountFs.js b/lib/MountFs.js
index <HASH>..<HASH> 100644
--- a/lib/MountFs.js
+++ b/lib/MountFs.js
@@ -52,7 +52,7 @@ var MountFs = module.exports = function MountFs(options) {
                 }
                 var args = [].slice.call(arguments);
                 args[0] = path;
-                if (/Sync$/.test(fsMethodName)) {
+                if (/(Sync|Stream)$/.test(fsMethodName)) {
                     try {
                         return mountedFs[fsMethodName].apply(this, args);
                     } catch (err) {
handle createReadStream et.al. like Sync methods

ie methods not taking a callback.

fixes unexpected-fs, express, send, express-jsxtransform