diff --git a/testing/async_reduce.cu b/testing/async_reduce.cu
index a2bf5ccf0..5357c1af3 100644
--- a/testing/async_reduce.cu
+++ b/testing/async_reduce.cu
@@ -48,7 +48,7 @@ struct custom_plus
     auto operator()(                                                          \
       ForwardIt&& first, Sentinel&& last                                      \
     )                                                                         \
-    THRUST_RETURNS(                                                           \
+    THRUST_DECLTYPE_RETURNS(                                                  \
       ::thrust::async::reduce(                                                \
         __VA_ARGS__                                                           \
       )                                                                       \
diff --git a/testing/async_reduce_into.cu b/testing/async_reduce_into.cu
index f99271294..a4a2be99e 100644
--- a/testing/async_reduce_into.cu
+++ b/testing/async_reduce_into.cu
@@ -49,7 +49,7 @@ struct custom_plus
     auto operator()(                                                          \
       ForwardIt&& first, Sentinel&& last, OutputIt&& output                   \
     )                                                                         \
-    THRUST_RETURNS(                                                           \
+    THRUST_DECLTYPE_RETURNS(                                                  \
       ::thrust::async::reduce_into(                                           \
         __VA_ARGS__                                                           \
       )                                                                       \
diff --git a/testing/async_transform.cu b/testing/async_transform.cu
index 93b38b17d..efaa885f0 100644
--- a/testing/async_transform.cu
+++ b/testing/async_transform.cu
@@ -48,7 +48,7 @@ struct divide_by_2
       ForwardIt&& first, Sentinel&& last, OutputIt&& output                   \
     , UnaryOperation&& op                                                     \
     )                                                                         \
-    THRUST_RETURNS(                                                           \
+    THRUST_DECLTYPE_RETURNS(                                                  \
       ::thrust::async::transform(                                             \
         __VA_ARGS__                                                           \
       )                                                                       \