diff --git a/crates/qrcode/keyfork-qrcode/src/lib.rs b/crates/qrcode/keyfork-qrcode/src/lib.rs
index b08810e..0955be0 100644
--- a/crates/qrcode/keyfork-qrcode/src/lib.rs
+++ b/crates/qrcode/keyfork-qrcode/src/lib.rs
@@ -245,7 +245,7 @@ pub fn scan_camera(timeout: Duration, index: usize) -> Result<Option<String>, QR
                     let mut queue = condvar
                         .wait_while(queue, |queue| {
                             eprintln!("thread {i} received signal");
-                            queue.images.is_empty() || !queue.shutdown
+                            queue.images.is_empty() || queue.shutdown
                         })
                         .expect(bug::bug!(POISONED_MUTEX));
                     if let Some(image) = queue.images.pop() {