diff --git a/core/module/install/ressource/defaultdata.php b/core/module/install/ressource/defaultdata.php
index 7b6ba668..4ec0a43c 100755
--- a/core/module/install/ressource/defaultdata.php
+++ b/core/module/install/ressource/defaultdata.php
@@ -35,7 +35,7 @@ class init extends common {
 			]
 		],
 		'core' => [
-			'dataVersion' => 11000,
+			'dataVersion' => 10603,
 			'lastBackup' => 0,
 			'lastClearTmp' => 0,
 			'lastAutoUpdate' => 0,