1 files changed, 1 insertions, 1 deletions
diff --git a/session.h b/session.h
index 3c1bc89a..944b9ce2 100644
--- a/session.h
+++ b/session.h
@@ -37,7 +37,7 @@
 
 namespace ledger {
 
-class session_t : public symbol_scope_t
+class session_t : public noncopyable, public scope_t
 {
   static void initialize();
   static void shutdown();