diff --git a/index.js b/index.js
index d874c77..7f57309 100644
--- a/index.js
+++ b/index.js
@@ -32,7 +32,7 @@ const optionDefinitions = [
   {
     name: 'storage',
     type: String,
-    defaultValue: '256',
+    defaultValue: 256,
     description: "Define which storage size to search for.  Accepted options are: '64', '256'.",
   },
   {