diff --git a/src/Server/TestKeeperTCPHandler.cpp b/src/Server/TestKeeperTCPHandler.cpp
index f33f1e6a705..aeb7da038b7 100644
--- a/src/Server/TestKeeperTCPHandler.cpp
+++ b/src/Server/TestKeeperTCPHandler.cpp
@@ -27,6 +27,7 @@ namespace ErrorCodes
 {
     extern const int SYSTEM_ERROR;
     extern const int UNEXPECTED_PACKET_FROM_CLIENT;
+    extern const int LOGICAL_ERROR;
 }
 
 struct PollResult