diff --git a/compiler/main/mls2obc.ml b/compiler/main/mls2obc.ml
index 9c1d0aa..cf5284d 100644
--- a/compiler/main/mls2obc.ml
+++ b/compiler/main/mls2obc.ml
@@ -484,8 +484,7 @@ let translate_ty_def { Minils.t_name = name; Minils.t_desc = tdesc;
   let tdesc = match tdesc with
     | Minils.Type_abs -> Type_abs
     | Minils.Type_alias ln -> Type_alias ln
-    | Minils.Type_enum tag_name_list ->
-        Type_enum (List.map shortname tag_name_list)
+    | Minils.Type_enum tag_name_list -> Type_enum tag_name_list
     | Minils.Type_struct field_ty_list ->
         Type_struct field_ty_list in
   { t_name = name; t_desc = tdesc; t_loc = loc }
diff --git a/compiler/obc/c/cgen.ml b/compiler/obc/c/cgen.ml
index 1c950f9..97464b0 100644
--- a/compiler/obc/c/cgen.ml
+++ b/compiler/obc/c/cgen.ml
@@ -640,7 +640,7 @@ let decls_of_type_decl otd =
     | Type_alias ty -> [Cdecl_typedef (ctype_of_otype ty, name)]
     | Type_enum nl ->
         let name = !global_name ^ "_" ^ name in
-        [Cdecl_enum (name, nl);
+        [Cdecl_enum (name, List.map cname_of_qn nl);
          Cdecl_function (name ^ "_of_string",
                          Cty_id name,
                          [("s", Cty_ptr Cty_char)]);
@@ -667,6 +667,7 @@ let cdefs_and_cdecls_of_type_decl otd =
               { var_decls = [];
                 block_body =
                   let gen_if t =
+                    let t = cname_of_qn t in
                     let funcall = Cfun_call ("strcmp", [Clhs (Cvar "s");
                                                         Cconst (Cstrlit t)]) in
                     let cond = Cbop ("==", funcall, Cconst (Ccint 0)) in
@@ -681,6 +682,7 @@ let cdefs_and_cdecls_of_type_decl otd =
               { var_decls = [];
                 block_body =
                   let gen_clause t =
+                    let t = cname_of_qn t in
                     let fun_call =
                       Cfun_call ("strcpy", [Clhs (Cvar "buf");
                                             Cconst (Cstrlit t)]) in
@@ -689,7 +691,8 @@ let cdefs_and_cdecls_of_type_decl otd =
                    Creturn (Clhs (Cvar "buf"))]; }
           } in
         ([of_string_fun; to_string_fun],
-         [Cdecl_enum (name, nl); cdecl_of_cfundef of_string_fun;
+         [Cdecl_enum (name, List.map cname_of_qn nl);
+          cdecl_of_cfundef of_string_fun;
           cdecl_of_cfundef to_string_fun])
     | Type_struct fl ->
         let decls = List.map (fun f -> cname_of_qn f.Signature.f_name,
diff --git a/compiler/obc/obc.ml b/compiler/obc/obc.ml
index 305243b..e8c061e 100644
--- a/compiler/obc/obc.ml
+++ b/compiler/obc/obc.ml
@@ -28,7 +28,7 @@ type type_dec =
 and tdesc =
   | Type_abs
   | Type_alias of ty
-  | Type_enum of name list
+  | Type_enum of constructor_name list
   | Type_struct of structure
 
 type const_dec = {
diff --git a/compiler/obc/obc_printer.ml b/compiler/obc/obc_printer.ml
index 7e655cc..04d6bcc 100644
--- a/compiler/obc/obc_printer.ml
+++ b/compiler/obc/obc_printer.ml
@@ -161,7 +161,7 @@ let print_type_def ff { t_name = name; t_desc = tdesc } =
         fprintf ff  "@[type %a@ = %a@\n@]" print_qualname name  print_type ty
     | Type_enum(tag_name_list) ->
         fprintf ff "@[type %a = " print_qualname name;
-        print_list_r print_name "" "|" "" ff tag_name_list;
+        print_list_r print_qualname "" "|" "" ff tag_name_list;
         fprintf ff "@\n@]"
     | Type_struct(f_ty_list) ->
         fprintf ff "@[type %a = " print_qualname name;