diff --git a/kernel/trunk/proc32.inc b/kernel/trunk/proc32.inc
index 650308eba5..80849420cb 100644
--- a/kernel/trunk/proc32.inc
+++ b/kernel/trunk/proc32.inc
@@ -25,7 +25,10 @@ macro invoke proc,[arg]
     end if
         call    [proc] }
 
-macro ccall proc,[arg]                  ; directly call CDECL procedure
+; @brief Directly call CDECL procedure
+; @param proc Callee name
+; @param arg Arguments to pass
+macro ccall proc,[arg]
  { common
     size@ccall = 0
     if ~ arg eq