diff --git a/core/model/DataObject.php b/core/model/DataObject.php
index ca798eb6e..32544e655 100755
--- a/core/model/DataObject.php
+++ b/core/model/DataObject.php
@@ -2218,7 +2218,7 @@ class DataObject extends ViewableData implements DataObjectInterface, i18nEntity
 	 * @param string $dataClass
 	 * @return bool
 	 */
-	public function has_own_table($dataClass) {
+	public static function has_own_table($dataClass) {
 		
 		// The condition below has the same effect as !is_subclass_of($dataClass,'DataObject'),
 		// which causes PHP < 5.3 to segfault in rare circumstances, see PHP bug #46753