1 files changed, 3 insertions, 3 deletions
diff --git a/libcxx/test/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp b/libcxx/test/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp
index 6648ca5abcf..0d2e3623ab4 100644
--- a/libcxx/test/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp
+++ b/libcxx/test/thread/thread.mutex/thread.lock/thread.lock.unique/thread.lock.unique.obs/op_bool.pass.cpp
@@ -21,9 +21,9 @@ std::mutex m;
 int main()
 {
     std::unique_lock<std::mutex> lk0;
-    assert(lk0 == false);
+    assert(static_cast<bool>(lk0) == false);
     std::unique_lock<std::mutex> lk1(m);
-    assert(lk1 == true);
+    assert(static_cast<bool>(lk1) == true);
     lk1.unlock();
-    assert(lk1 == false);
+    assert(static_cast<bool>(lk1) == false);
 }