diff --git a/tests/samplers_tests/test_samplers.py b/tests/samplers_tests/test_samplers.py
index 117c882841..2e1bac90b4 100644
--- a/tests/samplers_tests/test_samplers.py
+++ b/tests/samplers_tests/test_samplers.py
@@ -922,9 +922,9 @@ def objective(trial: Trial) -> float:
         sampler = sampler_class()
 
     study = optuna.study.create_study(sampler=sampler)
-    study.optimize(objective, n_trials=10)
+    study.optimize(objective, n_trials=3)
 
-    assert len(study.trials) == 10
+    assert len(study.trials) == 3
     assert all(t.state == TrialState.COMPLETE for t in study.trials)