diff --git a/lib/libc/locale/setrunelocale.c b/lib/libc/locale/setrunelocale.c
index 5ca255c0cbaf..53699e706694 100644
--- a/lib/libc/locale/setrunelocale.c
+++ b/lib/libc/locale/setrunelocale.c
@@ -34,9 +34,6 @@
  * SUCH DAMAGE.
  */
 
-/* setrunelocale() is obsolete in FreeBSD 6 -- use ANSI functions instead. */
-#define	OBSOLETE_IN_6
-
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -64,26 +61,6 @@ extern _RuneLocale	*_Read_RuneMagi(FILE *);
 
 static int		__setrunelocale(const char *);
 
-__warn_references(setrunelocale, "warning: setrunelocale() is obsolete. See setrunelocale(3).");
-int
-setrunelocale(char *encoding)
-{
-	int ret;
-
-	if (!encoding || !*encoding || strlen(encoding) > ENCODING_LEN ||
-	    (encoding[0] == '.' &&
-	     (encoding[1] == '\0' ||
-	      (encoding[1] == '.' && encoding[2] == '\0'))) ||
-	    strchr(encoding, '/') != NULL)
-		return (EINVAL);
-
-	ret = __detect_path_locale();
-	if (ret != 0)
-		return (ret);
-
-	return (__setrunelocale((const char *)encoding));
-}
-
 static int
 __setrunelocale(const char *encoding)
 {