diff --git a/StorageEngine.md b/StorageEngine.md
index 4b411ab1..831a81ea 100644
--- a/StorageEngine.md
+++ b/StorageEngine.md
@@ -44,7 +44,11 @@ function getDestination (req, file, cb) {
 }
 
 function MyCustomStorage (opts) {
-  this.getDestination = (opts.destination || getDestination)
+  if (typeof opts.destination === 'string') {
+    this.getDestination = function ($0, $1, cb) { cb(null, opts.destination) }
+  } else {
+    this.getDestination = (opts.destination || getDestination)
+  }
 }
 
 MyCustomStorage.prototype._handleFile = function _handleFile (req, file, cb) {