diff --git a/editors/vi.c b/editors/vi.c
index f271cc3e0..7d5497830 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -2180,9 +2180,6 @@ static void core_sig(int sig)
 	signal(SIGQUIT, core_sig);
 	signal(SIGILL, core_sig);
 	signal(SIGTRAP, core_sig);
-#ifdef SIGIOT
-	signal(SIGIOT, core_sig);
-#endif
 	signal(SIGABRT, core_sig);
 	signal(SIGFPE, core_sig);
 	signal(SIGBUS, core_sig);