diff --git a/src/index.ts b/src/index.ts
index 86c2b9b..24a628b 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,10 +1,10 @@
 import * as core from '@actions/core';
 import * as main from './main';
 
-(async () => {
+(async (): Promise<void> => {
   try {
     await main.run();
   } catch (e) {
-    core.setFailed(`Action failed with error ${e}`);
+    core.setFailed(`Action failed with error ${e.message}`);
   }
 })();