diff --git a/lib/index.ts b/lib/index.ts
index 93ae369cd5..92e5c4fcfb 100644
--- a/lib/index.ts
+++ b/lib/index.ts
@@ -153,7 +153,7 @@ export default class VM extends AsyncEventEmitter {
     return new VM({
       stateManager: this.stateManager.copy(),
       blockchain: this.blockchain,
-      common: this._common
+      common: this._common,
     })
   }