diff --git a/index.js b/index.js
index fb85396..9ef0d4f 100644
--- a/index.js
+++ b/index.js
@@ -30,7 +30,7 @@ exports.handler = function(event, context) {
     apiOptions.restApiId = apiGatewayArnPart[0];
     apiOptions.stage = apiGatewayArnPart[1];
     const method = apiGatewayArnPart[2];
-    const resource = '/'; // root resource
+    var resource = '/'; // root resource
 
     if (apiGatewayArnPart[3]) {
       resource += apiGatewayArnPart[3];