diff --git a/src/Storages/MergeTree/MergeTreeData.cpp b/src/Storages/MergeTree/MergeTreeData.cpp
index 6c1277596bd..79b3a9aff35 100644
--- a/src/Storages/MergeTree/MergeTreeData.cpp
+++ b/src/Storages/MergeTree/MergeTreeData.cpp
@@ -109,7 +109,6 @@ namespace ErrorCodes
     extern const int UNKNOWN_DISK;
     extern const int NOT_ENOUGH_SPACE;
     extern const int ALTER_OF_COLUMN_IS_FORBIDDEN;
-    extern const int BAD_ARGUMENTS;
 }