diff --git a/src/Storages/StorageMergeTree.cpp b/src/Storages/StorageMergeTree.cpp
index b710965271e..ab42da1dfa0 100644
--- a/src/Storages/StorageMergeTree.cpp
+++ b/src/Storages/StorageMergeTree.cpp
@@ -1447,6 +1447,11 @@ void StorageMergeTree::replacePartitionFrom(const StoragePtr & source_table, con
 
 void StorageMergeTree::movePartitionToTable(const StoragePtr & dest_table, const ASTPtr & partition, ContextPtr local_context)
 {
+    /// MOVE PARTITION cannot be run in parallel with merges/mutations,
+    /// since otherwise there can be some merge/mutation in progress,
+    /// that will be created in the source table after MOVE PARTITION.
+    std::unique_lock background_lock(currently_processing_in_background_mutex);
+
     auto lock1 = lockForShare(local_context->getCurrentQueryId(), local_context->getSettingsRef().lock_acquire_timeout);
     auto lock2 = dest_table->lockForShare(local_context->getCurrentQueryId(), local_context->getSettingsRef().lock_acquire_timeout);
 
@@ -1509,7 +1514,6 @@ void StorageMergeTree::movePartitionToTable(const StoragePtr & dest_table, const
             transaction.commit(&lock);
         }
 
-        clearOldMutations(true);
         clearOldPartsFromFilesystem();
 
         PartLog::addNewParts(getContext(), dst_parts, watch.elapsed());