diff --git a/application/migrations/018_status_grund.php b/application/migrations/018_status_grund.php
index c2643d3b9..81e0691b8 100644
--- a/application/migrations/018_status_grund.php
+++ b/application/migrations/018_status_grund.php
@@ -51,12 +51,6 @@ class Migration_Status_grund extends MigrationLib
 			"status_kurzbz",
 			"ON UPDATE CASCADE ON DELETE RESTRICT"
 		);
-		$this->addUniqueKey(
-			"public",
-			"tbl_status_grund",
-			"uk_tbl_status_grund_status_kurzbz",
-			array("status_kurzbz")
-		);
 		$this->grantTable("SELECT", "public", "tbl_status_grund", "web");
 		$this->grantTable(array("SELECT", "INSERT", "DELETE", "UPDATE"), "public", "tbl_status_grund", "admin");
 		$this->grantTable(array("SELECT", "INSERT", "DELETE", "UPDATE"), "public", "tbl_status_grund", "vilesci");