diff --git a/src/Interpreters/InterserverCredentials.cpp b/src/Interpreters/InterserverCredentials.cpp
index 141b8b681aa..f1c4b1923c6 100644
--- a/src/Interpreters/InterserverCredentials.cpp
+++ b/src/Interpreters/InterserverCredentials.cpp
@@ -6,7 +6,6 @@ namespace DB
 namespace ErrorCodes
 {
     extern const int NO_ELEMENTS_IN_CONFIG;
-    extern const int WRONG_PASSWORD;
 }
 
 std::shared_ptr<ConfigInterserverCredentials>
diff --git a/src/Server/InterserverIOHTTPHandler.cpp b/src/Server/InterserverIOHTTPHandler.cpp
index f85dac7d4c3..a62a2db0a10 100644
--- a/src/Server/InterserverIOHTTPHandler.cpp
+++ b/src/Server/InterserverIOHTTPHandler.cpp
@@ -20,7 +20,6 @@ namespace DB
 namespace ErrorCodes
 {
     extern const int ABORTED;
-    extern const int NOT_IMPLEMENTED;
     extern const int TOO_MANY_SIMULTANEOUS_QUERIES;
     extern const int WRONG_PASSWORD;
 }