diff --git a/validator/client/service.go b/validator/client/service.go
index 1334c6c904e..0997ea4b98f 100644
--- a/validator/client/service.go
+++ b/validator/client/service.go
@@ -292,6 +292,9 @@ func ConstructDialOptions(
 		transportSecurity = grpc.WithTransportCredentials(creds)
 	} else {
 		transportSecurity = grpc.WithInsecure()
+		log.Warn("You are using an insecure gRPC connection. If you are running your beacon node and " +
+			"validator on the same machines, you can ignore this message. If you want to know " +
+			"how to enable secure connections, see: https://docs.prylabs.network/docs/prysm-usage/secure-grpc")
 	}
 
 	if maxCallRecvMsgSize == 0 {