diff --git a/sys/libkern/inet_ntoa.c b/sys/libkern/inet_ntoa.c
index 767b2d9df175..0c3444c3d0b3 100644
--- a/sys/libkern/inet_ntoa.c
+++ b/sys/libkern/inet_ntoa.c
@@ -35,20 +35,6 @@ __FBSDID("$FreeBSD$");
 
 #include <netinet/in.h>
 
-char *
-inet_ntoa(struct in_addr ina)
-{
-	static char buf[4*sizeof "123"];
-	unsigned char *ucp = (unsigned char *)&ina;
-
-	sprintf(buf, "%d.%d.%d.%d",
-		ucp[0] & 0xff,
-		ucp[1] & 0xff,
-		ucp[2] & 0xff,
-		ucp[3] & 0xff);
-	return buf;
-}
-
 char *
 inet_ntoa_r(struct in_addr ina, char *buf)
 {
diff --git a/sys/netinet/in.h b/sys/netinet/in.h
index 699023546971..d449b1be296d 100644
--- a/sys/netinet/in.h
+++ b/sys/netinet/in.h
@@ -646,7 +646,6 @@ int	 in_localaddr(struct in_addr);
 int	 in_localip(struct in_addr);
 int	 in_ifhasaddr(struct ifnet *, struct in_addr);
 int	 inet_aton(const char *, struct in_addr *); /* in libkern */
-char	*inet_ntoa(struct in_addr); /* in libkern */
 char	*inet_ntoa_r(struct in_addr ina, char *buf); /* in libkern */
 char	*inet_ntop(int, const void *, char *, socklen_t); /* in libkern */
 int	 inet_pton(int af, const char *, void *); /* in libkern */