diff --git a/src/main.rs b/src/main.rs
index 879eeb8..a3435d6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -97,7 +97,7 @@ async fn index() -> HttpResponse {
         )
 }
 
-struct SendWrapper(mpsc::Sender<Vec<u8>>);
+struct SendWrapper(mpsc::SyncSender<Vec<u8>>);
 
 impl Write for SendWrapper {
     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
@@ -122,7 +122,7 @@ struct FileStreamer {
 
 impl FileStreamer {
     pub fn start() -> Self {
-        let (send, receive) = mpsc::channel();
+        let (send, receive) = mpsc::sync_channel(1);
         std::thread::spawn(move || {
             let mut tar = tar::Builder::new(SendWrapper(send));