diff --git a/cpp/tests/sampling/detail/nbr_sampling_validate.cu b/cpp/tests/sampling/detail/nbr_sampling_validate.cu
index 7ad169ae29a..951f016966c 100644
--- a/cpp/tests/sampling/detail/nbr_sampling_validate.cu
+++ b/cpp/tests/sampling/detail/nbr_sampling_validate.cu
@@ -28,6 +28,7 @@
 #include <rmm/device_scalar.hpp>
 #include <rmm/device_uvector.hpp>
 
+#include <cuda/std/functional>
 #include <thrust/count.h>
 #include <thrust/distance.h>
 #include <thrust/equal.h>
@@ -41,8 +42,6 @@
 #include <thrust/tuple.h>
 #include <thrust/unique.h>
 
-#include <cuda/std/functional>
-
 #include <algorithm>
 #include <functional>
 #include <iostream>