1 files changed, 1 insertions, 1 deletions
diff --git a/src/draft.h b/src/draft.h
index 277b4ff8..003dcefa 100644
--- a/src/draft.h
+++ b/src/draft.h
@@ -93,7 +93,7 @@ public:
   void parse_args(const value_t& args);
 
   virtual result_type real_calc(scope_t&) {
-    assert(0);
+    assert(false);
     return true;
   }