diff --git a/src/expression2/expression2_register_facets.cpp b/src/expression2/expression2_register_facets.cpp
index f14ceae6..a3a4b520 100644
--- a/src/expression2/expression2_register_facets.cpp
+++ b/src/expression2/expression2_register_facets.cpp
@@ -5,6 +5,7 @@
 
 #include "expression2_register_facets.hpp"
 
+#include <xo/expression2/UniqueString.hpp>
 #include <xo/expression2/detail/IGCObject_DUniqueString.hpp>
 #include <xo/expression2/detail/IPrintable_DUniqueString.hpp>
 
@@ -47,8 +48,6 @@ namespace xo {
         {
             scope log(XO_DEBUG(true));
 
-
-
             FacetRegistry::register_impl<AGCObject, DUniqueString>();
             FacetRegistry::register_impl<APrintable, DUniqueString>();
 
@@ -105,6 +104,8 @@ namespace xo {
             // until we register facets
             TypeRegistry::register_type<DGlobalSymtab>();
 
+            TypeRegistry::register_type<DGlobalSymtab::repr_type>();
+
             log && log(xtag("DUniqueString.tseq", typeseq::id<DUniqueString>()));
             log && log(xtag("DDefineExpr.tseq", typeseq::id<DDefineExpr>()));
             log && log(xtag("DVariable.tseq", typeseq::id<DVariable>()));