Index: boost/python/converter/implicit.hpp
===================================================================
--- boost/python/converter/implicit.hpp	(revision 41535)
+++ boost/python/converter/implicit.hpp	(working copy)
@@ -32,7 +32,7 @@
 
         arg_from_python<Source> get_source(obj);
         bool convertible = get_source.convertible();
-        BOOST_ASSERT(convertible);
+        BOOST_VERIFY(convertible);
         
         new (storage) Target(get_source());