diff --git a/proxy/src/context/parquet.rs b/proxy/src/context/parquet.rs
index 3a9d78f531..b55cc14532 100644
--- a/proxy/src/context/parquet.rs
+++ b/proxy/src/context/parquet.rs
@@ -233,17 +233,17 @@ pub async fn worker(
                 .context("remote storage for disconnect events init")?;
         let parquet_config_disconnect = parquet_config.clone();
         tokio::try_join!(
-            worker_inner(storage, rx, parquet_config, region.clone()),
+            worker_inner(storage, rx, parquet_config, &region),
             worker_inner(
                 storage_disconnect,
                 rx_disconnect,
                 parquet_config_disconnect,
-                region
+                &region
             )
         )
         .map(|_| ())
     } else {
-        worker_inner(storage, rx, parquet_config, region).await
+        worker_inner(storage, rx, parquet_config, &region).await
     }
 }
 
@@ -263,7 +263,7 @@ async fn worker_inner(
     storage: GenericRemoteStorage,
     rx: impl Stream<Item = RequestData>,
     config: ParquetConfig,
-    region: String,
+    region: &str,
 ) -> anyhow::Result<()> {
     #[cfg(any(test, feature = "testing"))]
     let storage = if config.test_remote_failures > 0 {
@@ -285,7 +285,7 @@ async fn worker_inner(
 
     let mut len = 0;
     while let Some(mut row) = rx.next().await {
-        row.region = region.clone();
+        region.clone_into(&mut row.region);
         rows.push(row);
         let force = last_upload.elapsed() > config.max_duration;
         if rows.len() == config.rows_per_group || force {
@@ -573,7 +573,7 @@ mod tests {
             .await
             .unwrap();
 
-        worker_inner(storage, rx, config, "us-east-1".to_string())
+        worker_inner(storage, rx, config, "us-east-1")
             .await
             .unwrap();