diff --git a/include/exec/create.hpp b/include/exec/create.hpp
index 4bd0c71da..172b79c8c 100644
--- a/include/exec/create.hpp
+++ b/include/exec/create.hpp
@@ -38,46 +38,54 @@ namespace exec {
 
     template <class _ReceiverId, class _Fun, class _ArgsId>
     struct __operation {
-      using _Context = __context<__t<_ReceiverId>, __t<_ArgsId>>;
+      using _Context = __context<stdexec::__t<_ReceiverId>, stdexec::__t<_ArgsId>>;
       using _Result = __call_result_t<_Fun, _Context&>;
       using _State = __if_c<same_as<_Result, void>, __void, std::optional<_Result>>;
 
-      STDEXEC_ATTRIBUTE((no_unique_address)) _Context __ctx_;
-      STDEXEC_ATTRIBUTE((no_unique_address)) _Fun __fun_;
-      STDEXEC_ATTRIBUTE((no_unique_address)) _State __state_{};
+      struct __t {
+        using __id = __operation;
 
-      friend void tag_invoke(start_t, __operation& __self) noexcept {
-        __self.__state_.emplace(__conv{[&]() noexcept {
-          return ((_Fun&&) __self.__fun_)(__self.__ctx_);
-        }});
-      }
+        STDEXEC_ATTRIBUTE((no_unique_address)) _Context __ctx_;
+        STDEXEC_ATTRIBUTE((no_unique_address)) _Fun __fun_;
+        STDEXEC_ATTRIBUTE((no_unique_address)) _State __state_{};
+
+        friend void tag_invoke(start_t, __t& __self) noexcept {
+          __self.__state_.emplace(__conv{[&]() noexcept {
+            return ((_Fun&&) __self.__fun_)(__self.__ctx_);
+          }});
+        }
+      };
     };
 
     template <class _Fun, class _ArgsId, class... _Sigs>
     struct __sender {
-      using _Args = __t<_ArgsId>;
-      using sender_concept = stdexec::sender_t;
-      using completion_signatures = stdexec::completion_signatures<_Sigs...>;
+      using _Args = stdexec::__t<_ArgsId>;
 
-      _Fun __fun_;
-      _Args __args_;
+      struct __t {
+        using __id = __sender;
+        using sender_concept = stdexec::sender_t;
+        using completion_signatures = stdexec::completion_signatures<_Sigs...>;
 
-      template <__decays_to<__sender> _Self, receiver_of<completion_signatures> _Receiver>
-        requires __callable<_Fun, __context<_Receiver, _Args>&>
-              && constructible_from<_Fun, __copy_cvref_t<_Self, _Fun>>
-              && constructible_from<_Args, __copy_cvref_t<_Self, _Args>>
-      friend auto tag_invoke(connect_t, _Self&& __self, _Receiver __rcvr)
-        -> __operation<__x<_Receiver>, _Fun, _ArgsId> {
-        static_assert(__nothrow_callable<_Fun, __context<_Receiver, _Args>&>);
-        return {
-          {(_Receiver&&) __rcvr, ((_Self&&) __self).__args_},
-          ((_Self&&) __self).__fun_
-        };
-      }
+        _Fun __fun_;
+        _Args __args_;
 
-      friend empty_env tag_invoke(get_env_t, const __sender&) noexcept {
-        return {};
-      }
+        template <__decays_to<__t> _Self, receiver_of<completion_signatures> _Receiver>
+          requires __callable<_Fun, __context<_Receiver, _Args>&>
+                && constructible_from<_Fun, __copy_cvref_t<_Self, _Fun>>
+                && constructible_from<_Args, __copy_cvref_t<_Self, _Args>>
+        friend auto tag_invoke(connect_t, _Self&& __self, _Receiver __rcvr)
+          -> stdexec::__t<__operation<stdexec::__id<_Receiver>, _Fun, _ArgsId>> {
+          static_assert(__nothrow_callable<_Fun, __context<_Receiver, _Args>&>);
+          return {
+            {(_Receiver&&) __rcvr, ((_Self&&) __self).__args_},
+            ((_Self&&) __self).__fun_
+          };
+        }
+
+        friend empty_env tag_invoke(get_env_t, const __t&) noexcept {
+          return {};
+        }
+      };
     };
 
     template <__completion_signature... _Sigs>
@@ -85,7 +93,7 @@ namespace exec {
       template <class _Fun, class... _Args>
         requires move_constructible<_Fun> && constructible_from<__decayed_tuple<_Args...>, _Args...>
       auto operator()(_Fun __fun, _Args&&... __args) const
-        -> __sender<_Fun, __x<__decayed_tuple<_Args...>>, _Sigs...> {
+        -> __t<__sender<_Fun, __id<__decayed_tuple<_Args...>>, _Sigs...>> {
         return {(_Fun&&) __fun, {(_Args&&) __args...}};
       }
     };