diff --git a/src/cuda/api/constants.hpp b/src/cuda/api/constants.hpp
index b0587293..3da69366 100644
--- a/src/cuda/api/constants.hpp
+++ b/src/cuda/api/constants.hpp
@@ -26,7 +26,7 @@ namespace cuda {
 *
 * If nVIDIA comes out with 64-lanes-per-warp GPUs - we'll refactor this.
 */
-enum : native_word_t { warp_size          = 32 };
+enum { warp_size = 32 };
 
 namespace stream {
 
diff --git a/src/cuda/api/types.hpp b/src/cuda/api/types.hpp
index 8f8974f5..a569015e 100644
--- a/src/cuda/api/types.hpp
+++ b/src/cuda/api/types.hpp
@@ -770,8 +770,6 @@ using host_thread_sync_scheduling_policy_t = context::host_thread_sync_schedulin
 
 } // namespace device
 
-using native_word_t = unsigned;
-
 namespace detail_ {
 
 template <typename T, typename U>