diff --git a/parse.c b/parse.c
index 2dbefc3..c90a14b 100644
--- a/parse.c
+++ b/parse.c
@@ -485,7 +485,7 @@ EX_TREE        *parse_binary(
             if (depth >= OR_PREC)
                 return leftp;
 
-            rightp = parse_binary(cp + 1, term, 2);
+            rightp = parse_binary(cp + 1, term, OR_PREC);
             tp = new_ex_tree();
             tp->type = EX_OR;
             tp->data.child.left = leftp;