diff --git a/examples/rental-model/advanced/deposit/observer.ts b/examples/rental-model/advanced/deposit/observer.ts
index 2957f68cc..2af2d3871 100644
--- a/examples/rental-model/advanced/deposit/observer.ts
+++ b/examples/rental-model/advanced/deposit/observer.ts
@@ -22,7 +22,7 @@ async function checkIsDopositClosed(spenderAddress: Address, funderAddress: Addr
     const functionNameWithArgs = `${parsedMethod.functionName}(${parsedMethod.args.join(",")})`;
     console.log(chalk.magenta("\nContract transaction log:"));
     console.log(chalk.magenta("call:"), functionNameWithArgs);
-    console.log(chalk.magenta("event:"), log["eventName"]);
+    console.log(chalk.magenta("event:"), "eventName" in log ? log["eventName"] : "<unknown>");
     console.log(chalk.magenta("from:"), transaction.from);
     console.log(chalk.magenta("hash:"), transaction.hash, "\n");
     const functionName = parsedMethod.functionName.toLowerCase();
diff --git a/examples/tsconfig.json b/examples/tsconfig.json
index b09c90abe..019ecf870 100644
--- a/examples/tsconfig.json
+++ b/examples/tsconfig.json
@@ -3,7 +3,7 @@
     "module": "esnext",
     "target": "esnext",
     "strict": true,
-    "noImplicitAny": false,
+    "noImplicitAny": true,
     "esModuleInterop": true,
     "moduleResolution": "Bundler",
     "removeComments": true,