diff --git a/include/signal.h b/include/signal.h
index 07982bd75a1..d0a2b9af466 100644
--- a/include/signal.h
+++ b/include/signal.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: signal.h,v 1.26 2018/05/30 13:20:38 bluhm Exp $	*/
+/*	$OpenBSD: signal.h,v 1.27 2026/03/23 21:33:43 daniel Exp $	*/
 /*	$NetBSD: signal.h,v 1.8 1996/02/29 00:04:57 jtc Exp $	*/
 
 /*-
@@ -132,7 +132,7 @@ int	thrkill(pid_t _tid, int _signum, void *_tcb);
 int	sigwait(const sigset_t *__restrict, int *__restrict);
 #endif
 #if __BSD_VISIBLE ||  __POSIX_VISIBLE >= 200809
-void	psignal(unsigned int, const char *);
+void	psignal(int, const char *);
 #endif
 #endif /* __BSD_VISIBLE || __POSIX_VISIBLE || __XPG_VISIBLE */
 __END_DECLS
diff --git a/lib/libc/gen/psignal.3 b/lib/libc/gen/psignal.3
index 3fd2ebbf7bf..64dd573f8ad 100644
--- a/lib/libc/gen/psignal.3
+++ b/lib/libc/gen/psignal.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: psignal.3,v 1.14 2019/05/16 13:35:16 schwarze Exp $
+.\"	$OpenBSD: psignal.3,v 1.15 2026/03/23 21:33:43 daniel Exp $
 .\"
 .\" Copyright (c) 1983, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: May 16 2019 $
+.Dd $Mdocdate: March 23 2026 $
 .Dt PSIGNAL 3
 .Os
 .Sh NAME
@@ -38,7 +38,7 @@
 .Sh SYNOPSIS
 .In signal.h
 .Ft void
-.Fn psignal "unsigned int sig" "const char *s"
+.Fn psignal "int sig" "const char *s"
 .Vt extern char *sys_siglist[];
 .Vt extern char *sys_signame[];
 .Sh DESCRIPTION
diff --git a/lib/libc/gen/psignal.c b/lib/libc/gen/psignal.c
index dca921d5a5a..5949c186cf0 100644
--- a/lib/libc/gen/psignal.c
+++ b/lib/libc/gen/psignal.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: psignal.c,v 1.10 2015/08/31 02:53:57 guenther Exp $ */
+/*	$OpenBSD: psignal.c,v 1.11 2026/03/23 21:33:43 daniel Exp $ */
 /*
  * Copyright (c) 1983, 1993
  *	The Regents of the University of California.  All rights reserved.
@@ -40,7 +40,7 @@
 #include <limits.h>
 
 void
-psignal(unsigned int sig, const char *s)
+psignal(int sig, const char *s)
 {
 	static char buf[NL_TEXTMAX];
 	const char *c;