diff --git a/helper/config.go b/helper/config.go
index e0d4ee9f9..7e1a0e624 100644
--- a/helper/config.go
+++ b/helper/config.go
@@ -83,7 +83,7 @@ const (
 	// RPC Endpoints
 	DefaultMainRPCUrl = "http://localhost:9545"
 	DefaultBorRPCUrl  = "http://localhost:8545"
-	DefaultBorGRPCUrl = "http://localhost:3131"
+	DefaultBorGRPCUrl = "localhost:3131"
 
 	// RPC Timeouts
 	DefaultEthRPCTimeout = 5 * time.Second