1 files changed, 1 insertions, 1 deletions
diff --git a/match.h b/match.h
index 24afd7c3..277d33a8 100644
--- a/match.h
+++ b/match.h
@@ -24,7 +24,7 @@
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-val do_s;
+extern val do_s;
 void match_init(void);
 val match_funcall(val name, val arg, val other_args);
 int extract(val spec, val filenames, val bindings);