diff --git a/src/Coordination/KeeperServer.cpp b/src/Coordination/KeeperServer.cpp
index b07c90b8660..736a01443ce 100644
--- a/src/Coordination/KeeperServer.cpp
+++ b/src/Coordination/KeeperServer.cpp
@@ -990,7 +990,7 @@ KeeperServer::ConfigUpdateState KeeperServer::applyConfigUpdate(
         raft_instance->set_priority(update->id, update->priority, /*broadcast on live leader*/true);
         return Accepted;
     }
-    chassert(false);
+    std::unreachable();
 }
 
 ClusterUpdateActions KeeperServer::getRaftConfigurationDiff(const Poco::Util::AbstractConfiguration & config)