diff --git a/optuna/multi_objective/samplers/_motpe.py b/optuna/multi_objective/samplers/_motpe.py
index e116b453d8..9f358b798a 100644
--- a/optuna/multi_objective/samplers/_motpe.py
+++ b/optuna/multi_objective/samplers/_motpe.py
@@ -29,10 +29,10 @@ class MOTPEMultiObjectiveSampler(BaseMultiObjectiveSampler):
     This sampler is a multi-objective version of :class:`~optuna.samplers.TPESampler`.
 
     .. note::
-        For `v2.9.0 <https://github.com/optuna/optuna/releases/tag/v2.9.0>`_ or later,
-        This sampler is deprecated and :class:`~optuna.samplers.TPESampler` should be
-        used instead. The following code shows how you apply :class:`~optuna.samplers.TPESampler`
-        to a multi-objective task:
+        For `v2.4.0 <https://github.com/optuna/optuna/releases/tag/v2.4.0>`_ or later,
+        :class:`~optuna.multi_objective.samplers.MOTPEMultiObjectiveSampler` is deprecated and
+        :class:`~optuna.samplers.TPESampler` should be used instead. The following code shows how
+        you apply :class:`~optuna.samplers.TPESampler` to a multi-objective task:
 
         .. testcode::
 
diff --git a/optuna/samplers/_tpe/multi_objective_sampler.py b/optuna/samplers/_tpe/multi_objective_sampler.py
index 83565dacde..6f9ff9f78e 100644
--- a/optuna/samplers/_tpe/multi_objective_sampler.py
+++ b/optuna/samplers/_tpe/multi_objective_sampler.py
@@ -26,9 +26,9 @@ class MOTPESampler(TPESampler):
 
     .. note::
         For `v2.9.0 <https://github.com/optuna/optuna/releases/tag/v2.9.0>`_ or later,
-        This sampler is deprecated and :class:`~optuna.samplers.TPESampler` should be
-        used instead. The following code shows how you apply :class:`~optuna.samplers.TPESampler`
-        to a multi-objective task:
+        :class:`~optuna.samplers.MOTPESampler` is deprecated and
+        :class:`~optuna.samplers.TPESampler` should be used instead. The following code shows how
+        you apply :class:`~optuna.samplers.TPESampler` to a multi-objective task:
 
         .. testcode::