diff --git a/src/virtio/virtgpu_kumquat/virtgpu_kumquat.rs b/src/virtio/virtgpu_kumquat/virtgpu_kumquat.rs
index 06bdb79f1f5..0feb2c912e6 100644
--- a/src/virtio/virtgpu_kumquat/virtgpu_kumquat.rs
+++ b/src/virtio/virtgpu_kumquat/virtgpu_kumquat.rs
@@ -154,7 +154,7 @@ impl VirtGpuKumquat {
     pub fn get_caps(&self, capset_id: u32, slice: &mut [u8]) -> MesaResult<()> {
         let caps = self.capsets.get(&capset_id).ok_or(MesaError::Unsupported)?;
         let length = min(slice.len(), caps.len());
-        slice.copy_from_slice(&caps[0..length]);
+        slice[0..length].copy_from_slice(&caps[0..length]);
         Ok(())
     }