diff --git a/htdocs/modules/profile/class/field.php b/htdocs/modules/profile/class/field.php
index fcd581623..b00fb41b0 100644
--- a/htdocs/modules/profile/class/field.php
+++ b/htdocs/modules/profile/class/field.php
@@ -589,7 +589,8 @@ public function insert(XoopsObject $obj, $force = false)
             }
 
             $sql = "ALTER TABLE `" . $profile_handler->table . "` " . $changetype . " `" . $obj->cleanVars['field_name'] . "` " . $type . $maxlengthstring . ' NULL';
-            if (!$this->db->query($sql)) {
+            $result = $force ? $this->db->queryF($sql) : $this->db->query($sql);
+            if (!$result) {
                 return false;
             }
         }