diff --git a/src/CyberAccount.ts b/src/CyberAccount.ts
index 695a5b1..dfd3559 100644
--- a/src/CyberAccount.ts
+++ b/src/CyberAccount.ts
@@ -337,7 +337,7 @@ class CyberAccount {
         ep: CyberBundler.entryPointAddress,
         operation: 0,
       },
-      { owner: this.owner.address },
+      { owner: this.owner.address, sponsorSig: sponsorSig || "" },
       this.chain.id,
     );