diff --git a/typescript/helloworld/src/app/app.ts b/typescript/helloworld/src/app/app.ts
index cec079b31..b6c8a4a1d 100644
--- a/typescript/helloworld/src/app/app.ts
+++ b/typescript/helloworld/src/app/app.ts
@@ -31,7 +31,7 @@ export class HelloWorldApp<
       message,
       chainConnection.overrides,
     );
-    const gasLimit = estimated.mul(1.1).toNumber();
+    const gasLimit = estimated.mul(11).div(10);
 
     const tx = await sender.sendHelloWorld(toDomain, message, {
       ...chainConnection.overrides,