diff --git a/src/TransactionController.ts b/src/TransactionController.ts
index d79e70db530..04620273847 100644
--- a/src/TransactionController.ts
+++ b/src/TransactionController.ts
@@ -509,7 +509,7 @@ export class TransactionController extends BaseController<TransactionConfig, Tra
 		}
 		/* istanbul ignore next */
 		if (networkType !== 'mainnet') {
-			etherscanSubdomain = 'api-${network-type}';
+			etherscanSubdomain = `api-${networkType}`;
 		}
 		const apiUrl = `https://${etherscanSubdomain}.etherscan.io`;