1 files changed, 1 insertions, 1 deletions

diff --git a/filter.c b/filter.c
index 788134a9..85dfa311 100644
--- a/filter.c
+++ b/filter.c
@@ -1,4 +1,4 @@
-static char rcsid[]="$Id$";
+static const char rcsid[]="$Id$";
 /*
  * Copyright (C) 1996-8 Michael R. Elkins.
  *