From 3c75c85d7f1ee993b8f2f37d5290e65cb80c40cc Mon Sep 17 00:00:00 2001
From: NIC619 <twedusuck@gmail.com>
Date: Thu, 19 Dec 2019 23:07:20 +0800
Subject: [PATCH] Fix extra white space

---
 libp2p/pubsub/gossipsub.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libp2p/pubsub/gossipsub.py b/libp2p/pubsub/gossipsub.py
index 37a1e5dd..05efe84e 100644
--- a/libp2p/pubsub/gossipsub.py
+++ b/libp2p/pubsub/gossipsub.py
@@ -121,7 +121,7 @@ class GossipSub(IPubsubRouter):
             #   instance in multistream-select, but it is not the protocol that gossipsub supports.
             #   In this case, probably we registered gossipsub to a wrong `protocol_id`
             #   in multistream-select, or wrong versions.
-             raise ValueError(f"Protocol={protocol_id} is not supported.")
+            raise ValueError(f"Protocol={protocol_id} is not supported.")
         self.peer_protocol[peer_id] = protocol_id
 
     def remove_peer(self, peer_id: ID) -> None: