diff --git a/lib/Db/Row2Mapper.php b/lib/Db/Row2Mapper.php
index 06deb17cf..e48bd2771 100644
--- a/lib/Db/Row2Mapper.php
+++ b/lib/Db/Row2Mapper.php
@@ -271,6 +271,12 @@ private function getFilterGroups(IQueryBuilder &$qb, array $filters): array {
 	private function getFilter(IQueryBuilder &$qb, array $filterGroup): array {
 		$filterExpressions = [];
 		foreach ($filterGroup as $filter) {
+			if ($filter['columnId'] === null) {
+				// a filter(group) was stored with a not-selected column. Skip,
+				// otherwise it breaks impressively.
+				continue;
+			}
+
 			$columnId = $filter['columnId'];
 			// Fail if the filter is for a column that is not in the list and no meta column
 			if (!isset($this->columns[$columnId]) && !isset($this->allColumns[$columnId]) && $columnId > 0) {