diff --git a/chaiscript/chaiscript.hpp b/chaiscript/chaiscript.hpp
index 87a1942e..09fbecb2 100644
--- a/chaiscript/chaiscript.hpp
+++ b/chaiscript/chaiscript.hpp
@@ -127,6 +127,7 @@ namespace chaiscript
     };
 
     struct BreakLoop {
+        dispatchkit::Boxed_Value retval;
         TokenPtr location;
 
         BreakLoop(const TokenPtr where) : location(where) { }
diff --git a/dispatchkit/bootstrap.hpp b/dispatchkit/bootstrap.hpp
index dd42c8ca..8f68744e 100644
--- a/dispatchkit/bootstrap.hpp
+++ b/dispatchkit/bootstrap.hpp
@@ -506,6 +506,7 @@ namespace dispatchkit
 
       add_basic_constructors<bool>(s, "bool");
       add_oper_assign<std::string>(s);
+      add_oper_assign<bool>(s);
 
       register_function(s, &to_string<const std::string &>, "internal_to_string");
       register_function(s, &to_string<bool>, "internal_to_string");