diff --git a/packages/cli/src/command-helpers/contracts.ts b/packages/cli/src/command-helpers/contracts.ts
index f80053e8..2ef5a580 100644
--- a/packages/cli/src/command-helpers/contracts.ts
+++ b/packages/cli/src/command-helpers/contracts.ts
@@ -193,7 +193,7 @@ export class ContractService {
       }
     }
 
-    throw new Error(`JSON-RPC is unreachable`);
+    throw new Error(`No implementation address found`);
   }
 
   private async fetchTransactionByHash(networkId: string, txHash: string) {
@@ -224,6 +224,6 @@ export class ContractService {
       }
     }
 
-    throw new Error(`JSON-RPC is unreachable`);
+    throw new Error(`Failed to fetch tx ${txHash}`);
   }
 }