diff --git a/misc/viz/Makefile b/misc/viz/Makefile
index 353a577576cc..38243420aef2 100644
--- a/misc/viz/Makefile
+++ b/misc/viz/Makefile
@@ -1,6 +1,6 @@
 PORTNAME=	viz
 PORTVERSION=	1.1.1
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	misc
 MASTER_SITES=	LOCAL/fenner
 
diff --git a/misc/viz/files/patch-lists.c b/misc/viz/files/patch-lists.c
new file mode 100644
index 000000000000..db88c0b0baf6
--- /dev/null
+++ b/misc/viz/files/patch-lists.c
@@ -0,0 +1,13 @@
+--- lists.c.orig
++++ lists.c
+@@ -6,10 +6,6 @@
+ 
+ #include "viz.h"
+ 
+-extern errno;
+-
+-extern char *malloc();
+-
+ void
+ printlist(level, list)
+ int level;
diff --git a/misc/viz/files/patch-loadfile.c b/misc/viz/files/patch-loadfile.c
new file mode 100644
index 000000000000..19309738ea8d
--- /dev/null
+++ b/misc/viz/files/patch-loadfile.c
@@ -0,0 +1,13 @@
+--- loadfile.c.orig
++++ loadfile.c
+@@ -1,9 +1,8 @@
++#include <errno.h>
+ #include <stdio.h>
+ #include <sys/types.h>
+ #include <sys/stat.h>
+ #include <sys/fcntl.h>
+-
+-extern errno;
+ 
+ char *loadfile(path)
+ char *path;