diff --git a/src/Storages/MergeTree/MergeTreeData.cpp b/src/Storages/MergeTree/MergeTreeData.cpp
index 11240766f2f..524dde18d69 100644
--- a/src/Storages/MergeTree/MergeTreeData.cpp
+++ b/src/Storages/MergeTree/MergeTreeData.cpp
@@ -4793,7 +4793,6 @@ void MergeTreeData::movePartitionToDisk(const ASTPtr & partition, const String &
 
     if (parts.empty())
     {
-        String no_parts_to_move_message;
         if (moving_part)
             throw Exception(ErrorCodes::UNKNOWN_DISK, "Part '{}' is already on disk '{}'", partition_id, disk->getName());
         else
@@ -4875,7 +4874,6 @@ void MergeTreeData::movePartitionToVolume(const ASTPtr & partition, const String
 
     if (parts.empty())
     {
-        String no_parts_to_move_message;
         if (moving_part)
             throw Exception(ErrorCodes::UNKNOWN_DISK, "Part '{}' is already on volume '{}'", partition_id, volume->getName());
         else