Index: capture_ifinfo.c
===================================================================
--- capture_ifinfo.c (revision 43534)
+++ capture_ifinfo.c (working copy)
@@ -47,6 +47,8 @@
 # include "wsutil/inet_v6defs.h"
 #endif
 
+#include <wsutil/file_util.h>
+
 #include <glib.h>
 
 #include "capture_opts.h"