diff --git a/CanUds.c b/CanUds.c
index eb44b96..671795d 100644
--- a/CanUds.c
+++ b/CanUds.c
@@ -463,7 +463,7 @@ static uint16_t WriteDataByIdentifier_2E(tCanUds *env) {
 
             // Tester_Fingerprint
             if (dataIdentifier_lo == 0x5A) {
-                tFingerprint *fingerprint = (tFingerprint *) &env->data.data[4];
+                tFingerprint *fingerprint = (tFingerprint *) &env->data.data[3];
                 if (is_valid_day(fingerprint->year, fingerprint->month, fingerprint->day) == false) {
                     return setResponseError(env, UDS_WriteDataByIdentifier,
                                             UDS_error_requestOutOfRange);
@@ -1606,6 +1606,7 @@ void CanUds_Init(
     );
 
     env->currentSession = UDS_session_defaultSession;
+    statusData.Status_Active_Diagnostic_Session.Active_Diagnostic_Session = UDS_session_defaultSession;
 
     InitThreadBlock(env->T_can_Uds, "CanUds", osPriorityNormal);
 };
\ No newline at end of file