diff --git a/src/modules/files/acconfig.h b/src/modules/files/acconfig.h
index 1cdbd919b0849fe9c922787caaeccc2d558b7238..1a17ae912072ca491ca38bad2de3df58bf32f622 100644
--- a/src/modules/files/acconfig.h
+++ b/src/modules/files/acconfig.h
@@ -1,5 +1,5 @@
 /*
- * $Id: acconfig.h,v 1.14 1999/06/23 19:08:01 grubba Exp $
+ * $Id: acconfig.h,v 1.15 1999/06/25 20:43:13 per Exp $
  */
 
 #ifndef FILE_MACHINE_H
@@ -35,6 +35,9 @@
 /* Define if your statvfs struct has the f_fstr member */
 #undef HAVE_STATVFS_F_FSTR
 
+/* Define if your statfs struct has the f_fsid member */
+#undef HAVE_STATFS_F_FSID
+
 /* Define if your statvfs struct has the member f_basetype */
 #undef HAVE_STATVFS_F_BASETYPE