diff --git a/lib/bearerstrategy.js b/lib/bearerstrategy.js
index 8b251225..34fbb131 100644
--- a/lib/bearerstrategy.js
+++ b/lib/bearerstrategy.js
@@ -185,7 +185,7 @@ function Strategy(options, verifyFn) {
 
   // force passReqToCallback to be `true` for our decoding verify wrapper
   /* eslint-disable no-underscore-dangle */
-  BearerStrategy.call(this, util._extend({}, opts, { passReqToCallback: true }), jwtVerify);
+  BearerStrategy.call(this, util._extend(opts, { passReqToCallback: true }), jwtVerify);
   /* eslint-enable no-underscore-dangle */
 
   this.name = 'oauth-bearer'; // Me, a name I call myself.