diff --git a/src/Database/Table/Selection.php b/src/Database/Table/Selection.php
index 1ce54940e..f05526773 100644
--- a/src/Database/Table/Selection.php
+++ b/src/Database/Table/Selection.php
@@ -489,7 +489,11 @@ public function aggregation(string $function, ?string $groupFunction = null)
 			return $this->explorer->query($query, ...$selection->getSqlBuilder()->getParameters())->fetch()->groupaggregate;
 		} else {
 			$selection->select($function);
-			foreach ($selection->fetch() as $val) {
+                        $values = $selection->fetch();
+                        if (!$values) {
+                            return null;
+                        }                        
+			foreach ($values as $val) {
 				return $val;
 			}
 		}