diff --git a/lib/dml/oci_native_moodle_database.php b/lib/dml/oci_native_moodle_database.php
index 9645c9a783a..e04ada7a61e 100644
--- a/lib/dml/oci_native_moodle_database.php
+++ b/lib/dml/oci_native_moodle_database.php
@@ -978,7 +978,8 @@ class oci_native_moodle_database extends moodle_database {
 
                     default: // Bind as CHAR (applying dirty hack)
                         // TODO: Optimise
-                        oci_bind_by_name($stmt, $key, $this->oracle_dirty_hack($tablename, $columnname, $params[$key]));
+                        $params[$key] = $this->oracle_dirty_hack($tablename, $columnname, $params[$key]);
+                        oci_bind_by_name($stmt, $key, $params[$key]);
                 }
             }
         }