diff --git a/extension/qfq/qfq/database/DatabaseUpdateData.php b/extension/qfq/qfq/database/DatabaseUpdateData.php
index 34c270467743a8286ce487864564a673f0f8973c..4521f501bc6fe32c7cbd35e38c0a26a32d948679 100644
--- a/extension/qfq/qfq/database/DatabaseUpdateData.php
+++ b/extension/qfq/qfq/database/DatabaseUpdateData.php
@@ -99,7 +99,7 @@ $UPDATE_ARRAY = array(
     ],
 
     '0.25.11' => [
-        "UPDATE FormElement SET parameter = CONCAT(parameter, '\nmin = ', SUBSTRING_INDEX(checkPattern, '|', 1), '\nmax = ', SUBSTRING_INDEX(checkPattern, '|', -1)) WHERE checkType LIKE 'min|max%' AND checkPattern <> ''",
+        "UPDATE FormElement SET checkType = 'alnumx', checkPattern = '', parameter = CONCAT(parameter, '\nmin = ', SUBSTRING_INDEX(checkPattern, '|', 1), '\nmax = ', SUBSTRING_INDEX(checkPattern, '|', -1)) WHERE checkType LIKE 'min|max%' AND checkPattern <> ''",
         "ALTER TABLE `FormElement` CHANGE `checkType` `checkType` ENUM('alnumx','digit','numerical','email','pattern','allbut','all') CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT 'alnumx';",
     ],