diff --git a/lib/plugins/endpoint-methods/method.js b/lib/plugins/endpoint-methods/method.js
index 747c9f67..d230ba07 100644
--- a/lib/plugins/endpoint-methods/method.js
+++ b/lib/plugins/endpoint-methods/method.js
@@ -8,7 +8,7 @@ const validate = require('./validate')
 
 function apiMethod (octokit, endpointDefaults, endpointParams, options, callback) {
   // Do not alter passed options (#786)
-  options = clone(options)
+  options = clone(options) || {}
 
   // lowercase header names (#760)
   options.headers = mapKeys(options.headers, (value, key) => key.toLowerCase())