diff --git a/sys/conf/files b/sys/conf/files
index 4f1893553a94..911a1d27421d 100644
--- a/sys/conf/files
+++ b/sys/conf/files
@@ -1496,6 +1496,7 @@ libkern/iconv_xlat16.c		optional libiconv
 libkern/index.c			standard
 libkern/inet_ntoa.c		standard
 libkern/mcount.c		optional profiling-routine
+libkern/memset.c		standard
 libkern/qsort.c			standard
 libkern/qsort_r.c		standard
 libkern/random.c		standard
diff --git a/sys/libkern/memset.c b/sys/libkern/memset.c
new file mode 100644
index 000000000000..bbbbf30823a4
--- /dev/null
+++ b/sys/libkern/memset.c
@@ -0,0 +1,37 @@
+/*-
+ * Copyright (C) 1992-2007 The FreeBSD Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/cdefs.h>
+#include <sys/types.h>
+__FBSDID("$FreeBSD$");
+
+void *
+memset(void *b, int c, size_t len)
+{
+	char *bb;
+
+	for (bb = (char *)b; len--; )
+		*bb++ = c;
+	return (b);
+}