diff --git a/lib/circuit.js b/lib/circuit.js
index 40c06ae1..f2d9da5c 100644
--- a/lib/circuit.js
+++ b/lib/circuit.js
@@ -110,7 +110,7 @@ class CircuitBreaker extends EventEmitter {
     return !!error[OUR_ERROR];
   }
 
-  constructor (action, options = {}) {
+  constructor (action = {}, options = {}) {
     super();
     this.options = options;
     this.options.timeout =