diff --git a/include/linux/marker.h b/include/linux/marker.h
index 34c14bc..b85e74c 100644
--- a/include/linux/marker.h
+++ b/include/linux/marker.h
@@ -211,8 +211,10 @@
 
 /*
  * marker_synchronize_unregister must be called between the last marker probe
- * unregistration and the end of module exit to make sure there is no caller
- * executing a probe when it is freed.
+ * unregistration and the first one of
+ * - the end of module exit function
+ * - the free of any resource used by the probes
+ * to ensure the code and data are valid for any possibly running probes.
  */
 #define marker_synchronize_unregister() synchronize_sched()