diff --git a/sys/libkern/strlcat.c b/sys/libkern/strlcat.c
index 2c2fa568e22..ab617560b7a 100644
--- a/sys/libkern/strlcat.c
+++ b/sys/libkern/strlcat.c
@@ -34,7 +34,7 @@ static char *rcsid = "$OpenBSD: strlcat.c,v 1.2 1999/06/17 16:28:58 millert Exp
 __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
-#include <string.h>
+#include <sys/libkern.h>
 
 /*
  * Appends src to string dst of size siz (unlike strncat, siz is the
diff --git a/sys/libkern/strlcpy.c b/sys/libkern/strlcpy.c
index a8a6cb7da86..0eedeb15d41 100644
--- a/sys/libkern/strlcpy.c
+++ b/sys/libkern/strlcpy.c
@@ -34,7 +34,7 @@ static char *rcsid = "$OpenBSD: strlcpy.c,v 1.4 1999/05/01 18:56:41 millert Exp
 __FBSDID("$FreeBSD$");
 
 #include <sys/types.h>
-#include <string.h>
+#include <sys/libkern.h>
 
 /*
  * Copy src to string dst of size siz.  At most siz-1 characters