diff --git a/sentry/src/transports/thread.rs b/sentry/src/transports/thread.rs
index 368ecdd8..80d0e120 100644
--- a/sentry/src/transports/thread.rs
+++ b/sentry/src/transports/thread.rs
@@ -80,7 +80,7 @@ impl TransportThread {
     pub fn flush(&self, timeout: Duration) -> bool {
         let (sender, receiver) = sync_channel(1);
         let _ = self.sender.send(Task::Flush(sender));
-        receiver.recv_timeout(timeout).is_err()
+        receiver.recv_timeout(timeout).is_ok()
     }
 }
 
diff --git a/sentry/src/transports/tokio_thread.rs b/sentry/src/transports/tokio_thread.rs
index 5ea1ae5e..9323e482 100644
--- a/sentry/src/transports/tokio_thread.rs
+++ b/sentry/src/transports/tokio_thread.rs
@@ -96,7 +96,7 @@ impl TransportThread {
     pub fn flush(&self, timeout: Duration) -> bool {
         let (sender, receiver) = sync_channel(1);
         let _ = self.sender.send(Task::Flush(sender));
-        receiver.recv_timeout(timeout).is_err()
+        receiver.recv_timeout(timeout).is_ok()
     }
 }