diff --git a/index.js b/index.js
index 30e6162..b36fa56 100644
--- a/index.js
+++ b/index.js
@@ -11,7 +11,8 @@ class ServerlessCommandLineEventArgs {
         options: {
           event: {
             usage: 'Event JSON passes function (e.g. --event \'{"foo":"var"}\' or -e \'{"foo":"var"}\')',
-            shortcut: 'e'
+            shortcut: 'e',
+            type: 'string',
           }
         }
       },
@@ -46,4 +47,4 @@ class ServerlessCommandLineEventArgs {
     }
   }
 }
-module.exports = ServerlessCommandLineEventArgs;
\ No newline at end of file
+module.exports = ServerlessCommandLineEventArgs;