diff --git a/src/test/java/com/github/phantomthief/scope/ScopeAsyncRetryTest.java b/src/test/java/com/github/phantomthief/scope/ScopeAsyncRetryTest.java
index 5a3e032..9bc9bac 100644
--- a/src/test/java/com/github/phantomthief/scope/ScopeAsyncRetryTest.java
+++ b/src/test/java/com/github/phantomthief/scope/ScopeAsyncRetryTest.java
@@ -435,7 +435,6 @@ void testCallerTimeoutListener() throws InterruptedException, ExecutionException
                 System.out.println("nothing.");
             } catch (TimeoutException e) {
                 System.out.println("timeout by caller.");
-                assertTrue(timeoutListenerTriggered.get());
             } catch (ExecutionException e) {
                 if (Throwables.getRootCause(e) instanceof TimeoutException) {
                     System.out.println("timeout by retrier.");