1 files changed, 2 insertions, 0 deletions
diff --git a/session.cc b/session.cc
index bba7ed97..27c63da6 100644
--- a/session.cc
+++ b/session.cc
@@ -301,10 +301,12 @@ static void initialize()
 {
   amount_t::initialize();
   value_t::initialize();
+  value_expr::initialize();
 }
 
 static void shutdown()
 {
+  value_expr::shutdown();
   value_t::shutdown();
   amount_t::shutdown();
 }