diff --git a/compat.h b/compat.h
index 27223abc..b9ddb8de 100644
--- a/compat.h
+++ b/compat.h
@@ -1,4 +1,4 @@
-/* $Id: compat.h,v 1.7 2009-07-21 13:07:50 nicm Exp $ */
+/* $Id: compat.h,v 1.8 2009-07-28 22:17:10 tcunha Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -116,6 +116,10 @@
 	} while (0)
 #endif
 
+#ifndef PASS_MAX
+#define PASS_MAX 128
+#endif
+
 #ifndef TTY_NAME_MAX
 #define TTY_NAME_MAX 32
 #endif