diff --git a/lib/msw-config.ts b/lib/msw-config.ts
index 1c9269a..9d0ab1b 100644
--- a/lib/msw-config.ts
+++ b/lib/msw-config.ts
@@ -543,5 +543,6 @@ export default class MswConfig {
 
   shutdown() {
     this.msw?.stop();
+    this.msw = undefined;
   }
 }