diff --git a/sync/ticketlock.cc b/sync/ticketlock.cc
index 4453ea9..401bcb3 100644
--- a/sync/ticketlock.cc
+++ b/sync/ticketlock.cc
@@ -2,7 +2,7 @@
 
 void Ticketlock::lock() {
     uint64_t ticket = __atomic_fetch_add(&ticket_count, 1, __ATOMIC_RELAXED);
-    while (ticket != __atomic_fetch_add(&ticket_current, 0, __ATOMIC_ACQUIRE))) {
+    while (ticket != __atomic_fetch_add(&ticket_current, 0, __ATOMIC_ACQUIRE)) {
         Core::pause();
     }
 }