diff --git a/rustacuda_core/src/memory/mod.rs b/rustacuda_core/src/memory/mod.rs
index 02e6e2b..c4a0bd6 100644
--- a/rustacuda_core/src/memory/mod.rs
+++ b/rustacuda_core/src/memory/mod.rs
@@ -87,20 +87,8 @@ unsafe impl<L: DeviceCopy, R: DeviceCopy> DeviceCopy for Result<L, R> {}
 unsafe impl<T: ?Sized + DeviceCopy> DeviceCopy for PhantomData<T> {}
 unsafe impl<T: DeviceCopy> DeviceCopy for Wrapping<T> {}
 
-macro_rules! impl_device_copy_array {
-    ($($n:expr)*) => {
-        $(
-            unsafe impl<T: DeviceCopy> DeviceCopy for [T;$ n] {}
-        )*
-    }
-}
+unsafe impl<T: DeviceCopy, const N: usize> DeviceCopy for [T; N] {}
 
-impl_device_copy_array! {
-    1 2 3 4 5 6 7 8 9 10
-    11 12 13 14 15 16 17 18 19 20
-    21 22 23 24 25 26 27 28 29 30
-    31 32
-}
 unsafe impl DeviceCopy for () {}
 unsafe impl<A: DeviceCopy, B: DeviceCopy> DeviceCopy for (A, B) {}
 unsafe impl<A: DeviceCopy, B: DeviceCopy, C: DeviceCopy> DeviceCopy for (A, B, C) {}
diff --git a/src/device.rs b/src/device.rs
index b30796c..5b803db 100644
--- a/src/device.rs
+++ b/src/device.rs
@@ -373,7 +373,7 @@ impl Device {
     /// ```
     pub fn uuid(self) -> CudaResult<[u8; 16]> {
         unsafe {
-            let mut cu_uuid = CUuuid { bytes: [0i8; 16] };
+            let mut cu_uuid = CUuuid { bytes: [0; 16] };
             cuDeviceGetUuid(&mut cu_uuid, self.device).to_result()?;
             let uuid: [u8; 16] = ::std::mem::transmute(cu_uuid.bytes);
             Ok(uuid)