diff --git a/tools/discount b/tools/discount
index 3035d069..51958b09 160000
--- a/tools/discount
+++ b/tools/discount
@@ -1 +1 @@
-Subproject commit 3035d069e42fd4bc69d11791047e07e5bb2619d7
+Subproject commit 51958b09a0138d51675b9e04b6057271ef066a8c