--- ./lib/libxview/frame/fm_props.h.orig	Tue Jun 29 07:16:14 1993
+++ ./lib/libxview/frame/fm_props.h	Sat Apr  1 18:25:24 2000
@@ -13,11 +13,16 @@
 #define _frame_props_h_already_included
 
 /* standard includes */
+#ifdef NULL
+#undef NULL
+#endif
 #ifndef FILE
 #ifndef SVR4
-#undef NULL
 #endif SVR4
 #include <stdio.h>
+#ifndef NULL
+#define NULL 0
+#endif
 #endif FILE
 #include <sys/time.h>
 #include <xview/notify.h>