diff --git a/CanUds.c b/CanUds.c
index a6fb708..78645fa 100644
--- a/CanUds.c
+++ b/CanUds.c
@@ -602,7 +602,7 @@ static uint16_t InputOutputControlByIdentifier_2F(tCanUds *env) {
 
                     uint8_t *pSet = (uint8_t *) &env->Status_Set_For_Model_output;
 
-                    pSet[dataIdentifier_lo - 0x60 - 1] = 1;
+                    pSet[dataIdentifier_lo - 0x60] = 1;
 
                     memcpy(uds_IoDataByIdentifier_2F_com_CF[dataIdentifier_lo].data, &env->data->data[4], size);
 
@@ -741,7 +741,7 @@ static uint16_t InputOutputControlByIdentifier_2F(tCanUds *env) {
                 if ((dataIdentifier_lo >= 0x60) && (dataIdentifier_lo <= 0x78)) {
 
                     uint8_t *pSet = (uint8_t *) &env->Status_Set_For_Model_output;
-                    pSet[dataIdentifier_lo - 0x60 - 1] = 0;
+                    pSet[dataIdentifier_lo - 0x60] = 0;
                     return 4;
 
                 } else {