diff --git a/Model_Task.c b/Model_Task.c
index f711108..d84ddf3 100644
--- a/Model_Task.c
+++ b/Model_Task.c
@@ -6,6 +6,7 @@
 #include <CmsisRtosThreadUtils.h>
 #include "HVAC_model.h"
 #include "memory.h"
+#include "SystemDelayInterface.h"
 
 #define LOG_SIGN "Model"
 #define LOGGER env->logger
@@ -74,6 +75,8 @@ static _Noreturn void ModelTask_Thread(tModelTask *env) {
     for (;;) {
         if (osMutexAcquire(env->access, 1000) == osOK) {
 
+            rtDW.t_now = SystemGetMs();
+
             HVAC_model_step();
             setActuatorBusy(env);
             env->isUpdate = true;