diff --git a/src/runtime/src/rtio_dma.rs b/src/runtime/src/rtio_dma.rs
index e5f5194..970b117 100644
--- a/src/runtime/src/rtio_dma.rs
+++ b/src/runtime/src/rtio_dma.rs
@@ -144,7 +144,7 @@ pub mod remote_dma {
 
         pub async fn playback_done(&mut self, source: u8, error: u8, channel: u32, timestamp: u64) {
             let mut traces_locked = self.traces.async_lock().await;
-            let mut trace = traces_locked.get_mut(&source).unwrap();
+            let trace = traces_locked.get_mut(&source).unwrap();
             trace.state = RemoteState::PlaybackEnded {
                 error: error,
                 channel: channel,