diff --git a/lib/private/DB/QueryBuilder/Partitioned/PartitionedQueryBuilder.php b/lib/private/DB/QueryBuilder/Partitioned/PartitionedQueryBuilder.php
index 9d351c1d3f1..794ac7484d7 100644
--- a/lib/private/DB/QueryBuilder/Partitioned/PartitionedQueryBuilder.php
+++ b/lib/private/DB/QueryBuilder/Partitioned/PartitionedQueryBuilder.php
@@ -76,6 +76,9 @@ class PartitionedQueryBuilder extends ShardedQueryBuilder {
 
 	// we need to save selects until we know all the table aliases
 	public function select(...$selects) {
+		if (count($selects) === 1 && is_array($selects[0])) {
+			$selects = $selects[0];
+		}
 		$this->selects = [];
 		$this->addSelect(...$selects);
 		return $this;