diff --git a/c/parallel.v2/src/hostjit/include/hostjit/cuda_minimal/stubs/cuda/std/__cstdlib/aligned_alloc.h b/c/parallel.v2/src/hostjit/include/hostjit/cuda_minimal/stubs/cuda/std/__cstdlib/aligned_alloc.h
index 7544ea33b60..72d8aa96966 100644
--- a/c/parallel.v2/src/hostjit/include/hostjit/cuda_minimal/stubs/cuda/std/__cstdlib/aligned_alloc.h
+++ b/c/parallel.v2/src/hostjit/include/hostjit/cuda_minimal/stubs/cuda/std/__cstdlib/aligned_alloc.h
@@ -43,7 +43,7 @@ namespace cuda
 {
 namespace std
 {
-inline __device__ void* aligned_alloc(__SIZE_TYPE__ __nbytes, __SIZE_TYPE__ __align) noexcept
+inline __device__ void* aligned_alloc(__SIZE_TYPE__ __align, __SIZE_TYPE__ __nbytes) noexcept
 {
   return ::__cuda_syscall_aligned_malloc(__nbytes, __align);
 }
@@ -59,13 +59,13 @@ namespace cuda
 {
 namespace std
 {
-inline void* __aligned_alloc_host(__SIZE_TYPE__ __nbytes, __SIZE_TYPE__) noexcept
+inline void* __aligned_alloc_host(__SIZE_TYPE__, __SIZE_TYPE__ __nbytes) noexcept
 {
   return __builtin_malloc(__nbytes);
 }
-inline void* aligned_alloc(__SIZE_TYPE__ __nbytes, __SIZE_TYPE__ __align) noexcept
+inline void* aligned_alloc(__SIZE_TYPE__ __align, __SIZE_TYPE__ __nbytes) noexcept
 {
-  return ::cuda::std::__aligned_alloc_host(__nbytes, __align);
+  return ::cuda::std::__aligned_alloc_host(__align, __nbytes);
 }
 } // namespace std
 } // namespace cuda
diff --git a/libcudacxx/include/cuda/std/__cstdlib/aligned_alloc.h b/libcudacxx/include/cuda/std/__cstdlib/aligned_alloc.h
index 2affe6a3e8d..3c9d3299041 100644
--- a/libcudacxx/include/cuda/std/__cstdlib/aligned_alloc.h
+++ b/libcudacxx/include/cuda/std/__cstdlib/aligned_alloc.h
@@ -34,14 +34,14 @@
 #include <cuda/std/__cccl/prologue.h>
 
 #if _CCCL_CUDA_COMPILATION()
-extern "C" _CCCL_DEVICE void* __cuda_syscall_aligned_malloc(size_t, size_t);
+extern "C" _CCCL_DEVICE void* __cuda_syscall_aligned_malloc(size_t __nbytes, size_t __align);
 #endif // _CCCL_CUDA_COMPILATION()
 
 _CCCL_BEGIN_NAMESPACE_CUDA_STD
 
 #if !_CCCL_COMPILER(NVRTC)
 [[nodiscard]] _CCCL_HOST_API inline void*
-__aligned_alloc_host([[maybe_unused]] size_t __nbytes, [[maybe_unused]] size_t __align) noexcept
+__aligned_alloc_host([[maybe_unused]] size_t __align, [[maybe_unused]] size_t __nbytes) noexcept
 {
 #  if _CCCL_OS(WINDOWS)
   _CCCL_ASSERT(false, "Use of aligned_alloc in host code is not supported on WIndows");
@@ -52,10 +52,10 @@ __aligned_alloc_host([[maybe_unused]] size_t __nbytes, [[maybe_unused]] size_t _
 }
 #endif // !_CCCL_COMPILER(NVRTC)
 
-[[nodiscard]] _CCCL_API inline void* aligned_alloc(size_t __nbytes, size_t __align) noexcept
+[[nodiscard]] _CCCL_API inline void* aligned_alloc(size_t __align, size_t __nbytes) noexcept
 {
   NV_IF_ELSE_TARGET(NV_IS_HOST,
-                    (return ::cuda::std::__aligned_alloc_host(__nbytes, __align);),
+                    (return ::cuda::std::__aligned_alloc_host(__align, __nbytes);),
                     (return ::__cuda_syscall_aligned_malloc(__nbytes, __align);))
 }
 
diff --git a/libcudacxx/test/libcudacxx/std/language.support/cstdlib/aligned_alloc.pass.cpp b/libcudacxx/test/libcudacxx/std/language.support/cstdlib/aligned_alloc.pass.cpp
index c182c368bee..aa6f8bc4080 100644
--- a/libcudacxx/test/libcudacxx/std/language.support/cstdlib/aligned_alloc.pass.cpp
+++ b/libcudacxx/test/libcudacxx/std/language.support/cstdlib/aligned_alloc.pass.cpp
@@ -28,8 +28,8 @@ TEST_DIAG_SUPPRESS_MSVC(4324) // padding was added at the end of a structure bec
 template <class T>
 TEST_FUNC void test_aligned_alloc(bool expect_success, cuda::std::size_t n, cuda::std::size_t align = alignof(T))
 {
-  static_assert(noexcept(cuda::std::aligned_alloc(n * sizeof(T), align)));
-  T* ptr = static_cast<T*>(cuda::std::aligned_alloc(n * sizeof(T), align));
+  static_assert(noexcept(cuda::std::aligned_alloc(align, n * sizeof(T))));
+  T* ptr = static_cast<T*>(cuda::std::aligned_alloc(align, n * sizeof(T)));
   if (expect_success)
   {
     // check that the memory was allocated