diff --git a/pkg/backup/table_pattern.go b/pkg/backup/table_pattern.go
index c0ad700a..b2e66d31 100644
--- a/pkg/backup/table_pattern.go
+++ b/pkg/backup/table_pattern.go
@@ -337,9 +337,6 @@ func changeTableQueryToAdjustDatabaseMapping(originTables *ListOfTables, dbMapRu
 				underlyingDB := matches[0][3]
 				underlyingDBClean := strings.NewReplacer(" ", "", "'", "").Replace(underlyingDB)
 				if underlyingTargetDB, isUnderlyingMapped := dbMapRule[underlyingDBClean]; isUnderlyingMapped {
-					if !usualIdentifier.MatchString(underlyingTargetDB) {
-						underlyingTargetDB = "`" + underlyingTargetDB + "`"
-					}
 					substitution = fmt.Sprintf("${1}(${2},%s,${4})", strings.Replace(underlyingDB, underlyingDBClean, underlyingTargetDB, 1))
 					originTable.Query = distributedRE.ReplaceAllString(originTable.Query, substitution)
 				}
diff --git a/test/integration/integration_test.go b/test/integration/integration_test.go
index dc8d536f..e7059309 100644
--- a/test/integration/integration_test.go
+++ b/test/integration/integration_test.go
@@ -1775,7 +1775,7 @@ func TestRestoreDatabaseMapping(t *testing.T) {
 
 	ch.queryWithNoError(r, "CREATE DATABASE database1")
 	ch.queryWithNoError(r, "CREATE TABLE database1.t1 (dt DateTime, v UInt64) ENGINE=ReplicatedMergeTree('/clickhouse/tables/database1/t1','{replica}') PARTITION BY toYYYYMM(dt) ORDER BY dt")
-	ch.queryWithNoError(r, "CREATE TABLE database1.d1 AS database1.t1 ENGINE=Distributed('{cluster}',database1, t1)")
+	ch.queryWithNoError(r, "CREATE TABLE database1.d1 AS database1.t1 ENGINE=Distributed('{cluster}', 'database1', 't1')")
 	if compareVersion(os.Getenv("CLICKHOUSE_VERSION"), "22.3") < 0 {
 		ch.queryWithNoError(r, "CREATE TABLE database1.t2 AS database1.t1 ENGINE=ReplicatedMergeTree('/clickhouse/tables/database1/t2','{replica}') PARTITION BY toYYYYMM(dt) ORDER BY dt")
 	} else {