diff --git a/libs/core/async_cuda/include/hpx/async_cuda/cuda_event.hpp b/libs/core/async_cuda/include/hpx/async_cuda/cuda_event.hpp
index fa2c8d80b9e4..31c6cc768f85 100644
--- a/libs/core/async_cuda/include/hpx/async_cuda/cuda_event.hpp
+++ b/libs/core/async_cuda/include/hpx/async_cuda/cuda_event.hpp
@@ -73,8 +73,8 @@ namespace hpx { namespace cuda { namespace experimental {
         cuda_event_pool& operator=(cuda_event_pool const&) = delete;
 
     private:
-        // Private singleton constructor 
-        // Creates a bunch of events on initialization
+        // Private singleton constructor. Creates a initial_events_in_pool of
+        // events on initialization
         cuda_event_pool()
           : max_number_devices_(0)
         {
diff --git a/libs/core/async_cuda/include/hpx/async_cuda/cuda_future.hpp b/libs/core/async_cuda/include/hpx/async_cuda/cuda_future.hpp
index 7b906baa42ed..62fc91c2d1d4 100644
--- a/libs/core/async_cuda/include/hpx/async_cuda/cuda_future.hpp
+++ b/libs/core/async_cuda/include/hpx/async_cuda/cuda_future.hpp
@@ -1,3 +1,4 @@
+//  Copyright (c) 2023 Gregor Daiß
 //  Copyright (c) 2020 John Biddiscombe
 //  Copyright (c) 2016 Thomas Heller
 //  Copyright (c) 2016 Hartmut Kaiser
@@ -236,8 +237,8 @@ namespace hpx { namespace cuda { namespace experimental {
         hpx::future<void> get_future_with_event(
             Allocator const& a, cudaStream_t stream, int device = -1)
         {
-            if (device == -1) 
-              check_cuda_error(cudaGetDevice(&device));
+            if (device == -1)
+                check_cuda_error(cudaGetDevice(&device));
             return get_future<Allocator, event_mode>(a, stream, device);
         }
 
diff --git a/libs/core/async_cuda/src/cuda_event.cpp b/libs/core/async_cuda/src/cuda_event.cpp
index 809cf1fa892c..470dbf5533d4 100644
--- a/libs/core/async_cuda/src/cuda_event.cpp
+++ b/libs/core/async_cuda/src/cuda_event.cpp
@@ -8,7 +8,7 @@
 #include <hpx/async_cuda/cuda_event.hpp>
 #include <hpx/async_cuda/custom_gpu_api.hpp>
 
-namespace hpx { namespace cuda { namespace experimental { 
+namespace hpx { namespace cuda { namespace experimental {
     cuda_event_pool& cuda_event_pool::get_event_pool()
     {
         static cuda_event_pool event_pool_;
diff --git a/libs/core/async_cuda/src/cuda_event_callback.cpp b/libs/core/async_cuda/src/cuda_event_callback.cpp
index 1b0267cd068b..9597656ecbe6 100644
--- a/libs/core/async_cuda/src/cuda_event_callback.cpp
+++ b/libs/core/async_cuda/src/cuda_event_callback.cpp
@@ -1,3 +1,4 @@
+//  Copyright (c) 2023 Gregor Daiß
 //  Copyright (c) 2021 ETH Zurich
 //  Copyright (c) 2020 John Biddiscombe
 //  Copyright (c) 2016 Hartmut Kaiser
diff --git a/libs/core/async_cuda/src/cuda_future.cpp b/libs/core/async_cuda/src/cuda_future.cpp
index c797191e1474..545b1dc9b77c 100644
--- a/libs/core/async_cuda/src/cuda_future.cpp
+++ b/libs/core/async_cuda/src/cuda_future.cpp
@@ -1,3 +1,4 @@
+//  Copyright (c) 2023 Gregor Daiß
 //  Copyright (c) 2020 John Biddiscombe
 //  Copyright (c) 2016 Hartmut Kaiser
 //  Copyright (c) 2016 Thomas Heller