diff --git a/yarn-project/foundation/src/json-rpc/client/json_rpc_client.ts b/yarn-project/foundation/src/json-rpc/client/json_rpc_client.ts
index 39ddefae1a1..c8f118bdb6c 100644
--- a/yarn-project/foundation/src/json-rpc/client/json_rpc_client.ts
+++ b/yarn-project/foundation/src/json-rpc/client/json_rpc_client.ts
@@ -56,9 +56,9 @@ export async function defaultFetch(
   }
   if (!resp.ok) {
     if (noRetry) {
-      throw new NoRetryError(responseJson.error);
+      throw new NoRetryError(responseJson.error.message);
     } else {
-      throw new Error(responseJson.error);
+      throw new Error(responseJson.error.message);
     }
   }