diff --git a/cub/cub/util_device.cuh b/cub/cub/util_device.cuh
index aa5febd404..f2698033c8 100644
--- a/cub/cub/util_device.cuh
+++ b/cub/cub/util_device.cuh
@@ -694,7 +694,7 @@ private:
   template <int, typename FunctorT>
   CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t invoke_static(FunctorT&, ::cuda::std::false_type)
   {
-    _LIBCUDACXX_UNREACHABLE();
+    _CCCL_UNREACHABLE();
   }
 
   template <typename FunctorT>
@@ -706,7 +706,7 @@ private:
   template <typename FunctorT>
   CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t do_invoke(FunctorT&, ::cuda::std::false_type)
   {
-    _LIBCUDACXX_UNREACHABLE();
+    _CCCL_UNREACHABLE();
   }
 };
 
@@ -737,7 +737,7 @@ private:
   template <int, typename FunctorT>
   CUB_RUNTIME_FUNCTION _CCCL_FORCEINLINE static cudaError_t invoke_static(FunctorT&, ::cuda::std::false_type)
   {
-    _LIBCUDACXX_UNREACHABLE();
+    _CCCL_UNREACHABLE();
   }
 };