diff --git a/src/lib/libc/string/strchr.3 b/src/lib/libc/string/strchr.3
index 85443867..07e7f29f 100644
--- a/src/lib/libc/string/strchr.3
+++ b/src/lib/libc/string/strchr.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: strchr.3,v 1.12 2015/11/24 09:14:35 daniel Exp $
+.\"	$OpenBSD: strchr.3,v 1.13 2018/10/01 06:37:37 martijn Exp $
 .\"
 .\" Copyright (c) 1990, 1991 The Regents of the University of California.
 .\" All rights reserved.
@@ -31,7 +31,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: November 24 2015 $
+.Dd $Mdocdate: October 1 2018 $
 .Dt STRCHR 3
 .Os
 .Sh NAME
@@ -50,6 +50,7 @@ The
 .Fn strchr
 function locates the first occurrence of the character
 .Fa c
+.Pq converted to a char
 in the string
 .Fa s .
 The terminating NUL character is considered part of the string.
diff --git a/src/lib/libc/string/strchr.c b/src/lib/libc/string/strchr.c
index b396b45b..8bfa7ac3 100644
--- a/src/lib/libc/string/strchr.c
+++ b/src/lib/libc/string/strchr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: strchr.c,v 1.3 2015/08/31 02:53:57 guenther Exp $ */
+/*	$OpenBSD: strchr.c,v 1.4 2018/10/01 06:37:37 martijn Exp $ */
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
  * All rights reserved.
@@ -36,7 +36,7 @@ char *
 strchr(const char *p, int ch)
 {
 	for (;; ++p) {
-		if (*p == ch)
+		if (*p == (char) ch)
 			return((char *)p);
 		if (!*p)
 			return((char *)NULL);
diff --git a/src/lib/libc/string/strrchr.3 b/src/lib/libc/string/strrchr.3
index f4ce691a..5abb88ec 100644
--- a/src/lib/libc/string/strrchr.3
+++ b/src/lib/libc/string/strrchr.3
@@ -1,4 +1,4 @@
-.\"	$OpenBSD: strrchr.3,v 1.11 2015/11/24 09:14:35 daniel Exp $
+.\"	$OpenBSD: strrchr.3,v 1.12 2018/10/01 06:37:37 martijn Exp $
 .\"
 .\" Copyright (c) 1990, 1991 The Regents of the University of California.
 .\" All rights reserved.
@@ -31,7 +31,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: November 24 2015 $
+.Dd $Mdocdate: October 1 2018 $
 .Dt STRRCHR 3
 .Os
 .Sh NAME
@@ -50,6 +50,7 @@ The
 .Fn strrchr
 function locates the last occurrence of the character
 .Fa c
+.Pq converted to a char
 in the string
 .Fa s .
 The terminating
diff --git a/src/lib/libc/string/strrchr.c b/src/lib/libc/string/strrchr.c
index 93755721..848d1ad2 100644
--- a/src/lib/libc/string/strrchr.c
+++ b/src/lib/libc/string/strrchr.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: strrchr.c,v 1.3 2015/08/31 02:53:57 guenther Exp $ */
+/*	$OpenBSD: strrchr.c,v 1.4 2018/10/01 06:37:37 martijn Exp $ */
 /*
  * Copyright (c) 1988 Regents of the University of California.
  * All rights reserved.
@@ -38,7 +38,7 @@ strrchr(const char *p, int ch)
 	char *save;
 
 	for (save = NULL;; ++p) {
-		if (*p == ch)
+		if (*p == (char) ch)
 			save = (char *)p;
 		if (!*p)
 			return(save);