diff --git a/appl/ftp/ftp/cmds.c b/appl/ftp/ftp/cmds.c
index 4f3214390..3121a310c 100644
--- a/appl/ftp/ftp/cmds.c
+++ b/appl/ftp/ftp/cmds.c
@@ -1224,7 +1224,7 @@ void
 shell(int argc, char **argv)
 {
 	pid_t pid;
-	RETSIGTYPE (*old1)(), (*old2)();
+	RETSIGTYPE (*old1)(int), (*old2)(int);
 	char shellnam[40], *shell, *namep; 
 	int status;
 
@@ -1612,7 +1612,7 @@ void
 doproxy(int argc, char **argv)
 {
 	struct cmd *c;
-	RETSIGTYPE (*oldintr)();
+	RETSIGTYPE (*oldintr)(int);
 
 	if (argc < 2 && !another(&argc, &argv, "command")) {
 		printf("usage: %s command\n", argv[0]);
diff --git a/appl/ftp/ftp/ftp.c b/appl/ftp/ftp/ftp.c
index ba68bd200..5568c1cd5 100644
--- a/appl/ftp/ftp/ftp.c
+++ b/appl/ftp/ftp/ftp.c
@@ -622,7 +622,7 @@ sendrequest (char *cmd, char *local, char *remote, char *lmode, int printnames)
     int c, d;
     FILE *fin, *dout = 0;
     int (*closefunc) (FILE *);
-    RETSIGTYPE (*oldintr)(), (*oldintp)();
+    RETSIGTYPE (*oldintr)(int), (*oldintp)(int);
     long bytes = 0, hashbytes = HASHBYTES;
     char *rmode = "w";
 
diff --git a/appl/telnet/telnet/sys_bsd.c b/appl/telnet/telnet/sys_bsd.c
index eccafe885..8de3326e6 100644
--- a/appl/telnet/telnet/sys_bsd.c
+++ b/appl/telnet/telnet/sys_bsd.c
@@ -314,10 +314,10 @@ TerminalRestoreState()
 
 
 #ifdef	SIGTSTP
-static RETSIGTYPE susp();
+static RETSIGTYPE susp(int);
 #endif	/* SIGTSTP */
 #ifdef	SIGINFO
-static RETSIGTYPE ayt();
+static RETSIGTYPE ayt(int);
 #endif
 
 void
@@ -495,7 +495,7 @@ TerminalNewMode(int f)
     } else {
         sigset_t sm;
 #ifdef	SIGINFO
-	RETSIGTYPE ayt_status();
+	RETSIGTYPE ayt_status(int);
 
 	signal(SIGINFO, ayt_status);
 #endif
diff --git a/lib/kafs/afssys.c b/lib/kafs/afssys.c
index 70f87690e..5ea689d9b 100644
--- a/lib/kafs/afssys.c
+++ b/lib/kafs/afssys.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1995, 1996, 1997, 1998, 1999 Kungliga Tekniska Högskolan
+ * Copyright (c) 1995 - 200 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden).
  * All rights reserved.
  * 
@@ -283,7 +283,7 @@ int
 k_hasafs(void)
 {
 #if !defined(NO_AFS) && defined(SIGSYS)
-    RETSIGTYPE (*saved_func)();
+    RETSIGTYPE (*saved_func)(int);
 #endif
     int saved_errno;
     char *env = getenv ("AFS_SYSCALL");
diff --git a/lib/roken/roken-common.h b/lib/roken/roken-common.h
index ca05a87b4..0f1388293 100644
--- a/lib/roken/roken-common.h
+++ b/lib/roken/roken-common.h
@@ -125,7 +125,7 @@
 #endif
 
 #ifndef SIG_ERR
-#define SIG_ERR ((RETSIGTYPE (*)())-1)
+#define SIG_ERR ((RETSIGTYPE (*)(int))-1)
 #endif
 
 /*
@@ -235,7 +235,7 @@
 
 #if IRIX != 4 /* fix for compiler bug */
 #ifdef RETSIGTYPE
-typedef RETSIGTYPE (*SigAction)(/* int??? */);
+typedef RETSIGTYPE (*SigAction)(int);
 SigAction signal(int iSig, SigAction pAction); /* BSD compatible */
 #endif
 #endif
diff --git a/lib/roken/signal.c b/lib/roken/signal.c
index 9cbd98295..583724c94 100644
--- a/lib/roken/signal.c
+++ b/lib/roken/signal.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1995, 1996, 1997 Kungliga Tekniska Högskolan
+ * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan
  * (Royal Institute of Technology, Stockholm, Sweden).
  * All rights reserved.
  * 
@@ -49,8 +49,6 @@ RCSID("$Id$");
  * Do we need any extra hacks for SIGCLD and/or SIGCHLD?
  */
 
-typedef RETSIGTYPE (*SigAction)(/* int??? */);
-
 SigAction
 signal(int iSig, SigAction pAction)
 {