diff --git a/Modules/parsermodule.c b/Modules/parsermodule.c
index 0d95bcc..1d2fe13 100644
--- a/Modules/parsermodule.c
+++ b/Modules/parsermodule.c
@@ -31,7 +31,7 @@
 #include "graminit.h"
 #include "errcode.h"
 
-object *
+static object *
 node2tuple(n)
 	node *n;
 {