diff --git a/lib/runCode.js b/lib/runCode.js
index 7063614c903..506770ac296 100644
--- a/lib/runCode.js
+++ b/lib/runCode.js
@@ -173,6 +173,8 @@ module.exports = function (opts, cb) {
       // create a callback for async opFunc
       if (opInfo.async) {
         args.push(function (err, result) {
+          if (err) return cb(err)
+
           // save result to the stack
           if (result) {
             // NOTE: Ensure that every stack item is padded to 256 bits.
@@ -180,7 +182,8 @@ module.exports = function (opts, cb) {
             result = utils.setLengthLeft(result, 32)
             runState.stack.push(result)
           }
-          cb(err)
+
+          cb()
         })
       }