diff --git a/codegen/genfacet b/codegen/genfacet
index 0d632ba..cb6517a 100755
--- a/codegen/genfacet
+++ b/codegen/genfacet
@@ -122,6 +122,8 @@ def gen_facet(env,
         md['args'] = [{'type': "Opaque", 'name': "data"}] + md['args']
         md['doc'] = '\n'.join(md['doc'])
 
+    router_facet_explicit_content = idl.get('router_facet_explicit_content', [])
+
     # Foo.hpp
     facet_hpp_fname = f'{facet_name}.hpp'
     # AFoo
@@ -193,6 +195,7 @@ def gen_facet(env,
         'router_facet': router_facet,
         'router_facet_hpp_j2': 'router_facet.hpp.j2',
         'router_facet_hpp_fname': router_facet_hpp_fname,
+        'router_facet_explicit_content': router_facet_explicit_content,
         #
         'types': types,
         #
diff --git a/include/xo/facet/FacetRegistry.hpp b/include/xo/facet/FacetRegistry.hpp
index 88ae7ae..b0101fc 100644
--- a/include/xo/facet/FacetRegistry.hpp
+++ b/include/xo/facet/FacetRegistry.hpp
@@ -140,7 +140,7 @@ namespace xo {
                 auto retval = try_variant<ATo>(from);
 
                 if (!retval)
-                    throw std::runtime_error(tostr("FacetRegistry::try_variant failed",
+                    throw std::runtime_error(tostr("FacetRegistry::variant failed",
                                                    xtag("AFrom.tseq", typeseq::id<AFrom>()),
                                                    xtag("AFrom.tname", typerecd::recd<AFrom>().name()),
                                                    xtag("ATo.tseq", typeseq::id<ATo>()),