diff --git a/lib/lwres/lwinetaton.c b/lib/lwres/lwinetaton.c
index 2068a922c7..216d46b02b 100644
--- a/lib/lwres/lwinetaton.c
+++ b/lib/lwres/lwinetaton.c
@@ -70,7 +70,7 @@
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)inet_addr.c	8.1 (Berkeley) 6/17/93";
-static char rcsid[] = "$Id: lwinetaton.c,v 1.6 2000/06/27 18:02:12 bwelling Exp $";
+static char rcsid[] = "$Id: lwinetaton.c,v 1.7 2000/06/28 22:57:42 bwelling Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <config.h>
@@ -82,6 +82,8 @@ static char rcsid[] = "$Id: lwinetaton.c,v 1.6 2000/06/27 18:02:12 bwelling Exp
 #include <lwres/int.h>
 #include <lwres/net.h>
 
+#include "assert_p.h"
+
 /* 
  * Check whether "cp" is a valid ascii representation
  * of an Internet address and convert to a binary address.