diff --git a/common/utils/itti/timer_messages_types.h b/common/utils/itti/timer_messages_types.h
index 968e319424..4d50a3b07f 100644
--- a/common/utils/itti/timer_messages_types.h
+++ b/common/utils/itti/timer_messages_types.h
@@ -1,6 +1,11 @@
 #ifndef TIMER_MESSAGES_TYPES_H_
 #define TIMER_MESSAGES_TYPES_H_
 
+//-------------------------------------------------------------------------------------------//
+// Defines to access message fields.
+#define TIMER_HAS_EXPIRED(mSGpTR)   (mSGpTR)->ittiMsg.timer_has_expired
+
+//-------------------------------------------------------------------------------------------//
 typedef struct {
     void *arg;
     long  timer_id;