diff --git a/src/Storages/AlterCommands.cpp b/src/Storages/AlterCommands.cpp
index 96bcb20bb87..b4f179035b0 100644
--- a/src/Storages/AlterCommands.cpp
+++ b/src/Storages/AlterCommands.cpp
@@ -766,10 +766,9 @@ bool AlterCommand::isRequireMutationStage(const StorageInMemoryMetadata & metada
     if (type == DROP_INDEX || type == DROP_PROJECTION || type == RENAME_COLUMN)
         return true;
 
-    /// Drop alias is metadata alter, in other case mutation
-    /// is required.
+    /// Drop alias is metadata alter, in other case mutation is required.
     if (type == DROP_COLUMN)
-        return metadata->columns.hasPhysical(column_name);
+        return metadata.columns.hasPhysical(column_name);
 
     if (type != MODIFY_COLUMN || data_type == nullptr)
         return false;