diff --git a/lib/db/mysql.php b/lib/db/mysql.php
index ac1c9aeccab..e582eafcff8 100644
--- a/lib/db/mysql.php
+++ b/lib/db/mysql.php
@@ -1653,11 +1653,6 @@ function main_upgrade($oldversion=0) {
         table_column('course_request','','password','varchar',50);
     }
 
-    if ($oldversion < 2005103100) { // Repair enrol field in user_students/user_teacher table
-        execute_sql("UPDATE {$CFG->prefix}user_students SET enrol='manual' WHERE enrol='' OR enrol='internal'");
-        execute_sql("UPDATE {$CFG->prefix}user_teachers SET enrol='manual' WHERE enrol=''");
-    }
-
     return $result;
 }
 
diff --git a/lib/db/postgres7.php b/lib/db/postgres7.php
index 6f58e51c726..f4764e37420 100644
--- a/lib/db/postgres7.php
+++ b/lib/db/postgres7.php
@@ -1395,11 +1395,6 @@ function main_upgrade($oldversion=0) {
         table_column('course_request','','password','text');
     }
     
-    if ($oldversion < 2005103100) { // Repair enrol field in user_students/user_teacher table
-        execute_sql("UPDATE {$CFG->prefix}user_students SET enrol='manual' WHERE enrol='' OR enrol='internal'");
-        execute_sql("UPDATE {$CFG->prefix}user_teachers SET enrol='manual' WHERE enrol=''");
-    }
-
     return $result;
 }
 
diff --git a/version.php b/version.php
index 1fa9825e358..7e20af7fb9d 100644
--- a/version.php
+++ b/version.php
@@ -6,7 +6,7 @@
 // This is compared against the values stored in the database to determine
 // whether upgrades should be performed (see lib/db/*.php)
 
-   $version = 2005103100;  // YYYYMMDD = date
+   $version = 2005101200;  // YYYYMMDD = date
                            //       XY = increments within a single day
 
    $release = '1.6 development';    // Human-friendly version name