diff --git a/include/mysql_inc.h b/include/mysql_inc.h
index 069f5a2..9fef83a 100644
--- a/include/mysql_inc.h
+++ b/include/mysql_inc.h
@@ -65,7 +65,7 @@
 //MariaDB doesn't have my_getsystime function. They replaced with my_hrtime_t my_hrtime()
 #if  defined(MARIADB_BASE_VERSION)
 #define my_getsystime() (my_hrtime()).val
-//MariaDB has a kill service that overrides thd_killed. It also has thd_killed function defined so redefine it.
+//MariaDB has a kill service that overrides thd_killed as a macro. It also has thd_killed function defined for backwards compatibility, so we redefine it.
 #undef thd_killed
 extern "C" int thd_killed(const MYSQL_THD thd);
 #endif