diff --git a/common/utils/itti/intertask_messages_def.h b/common/utils/itti/intertask_messages_def.h
index 4f00a10c213bebbcd12abd9d820a8765367ae09f..685b0363851588bbbb652979ddef235f958e3951 100644
--- a/common/utils/itti/intertask_messages_def.h
+++ b/common/utils/itti/intertask_messages_def.h
@@ -1,6 +1,12 @@
 /* This message asks for task initialization */
 MESSAGE_DEF(INITIALIZE_MESSAGE, MESSAGE_PRIORITY_MED, struct {}, initialize_message)
 
+/* This message asks for task activation */
+MESSAGE_DEF(ACTIVATE_MESSAGE,   MESSAGE_PRIORITY_MED, struct {}, activate_message)
+
+/* This message asks for task deactivation */
+MESSAGE_DEF(DEACTIVATE_MESSAGE, MESSAGE_PRIORITY_MED, struct {}, deactivate_message)
+
 /* This message asks for task termination */
 MESSAGE_DEF(TERMINATE_MESSAGE,  MESSAGE_PRIORITY_MAX, struct {}, terminate_message)