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diff --git a/ash/trap.h b/ash/trap.h
index e542ba4..c0d5cd9 100644
--- a/ash/trap.h
+++ b/ash/trap.h
@@ -40,6 +40,7 @@
 void clear_traps(int);
 long setsignal(int, int);
 void ignoresig(int, int);
+/* See definition for explanation of the __cdecl */
 __cdecl void onsig(int);
 void dotrap(void);
 void setinteractive(int);