Depend on hidden_dropout_prob

src/transformers/models/bert/modeling_bert.py

@@ -1585,7 +1585,10 @@ class BertForMultipleChoice(BertPreTrainedModel):
         super().__init__(config)
 
         self.bert = BertModel(config)
-        self.dropout = nn.Dropout(config.classifier_dropout)
+        classifier_dropout = (
+            config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob
+        )
+        self.dropout = nn.Dropout(classifier_dropout)
         self.classifier = nn.Linear(config.hidden_size, 1)
 
         self.init_weights()

src/transformers/models/mobilebert/modeling_mobilebert.py

@@ -1415,7 +1415,10 @@ class MobileBertForMultipleChoice(MobileBertPreTrainedModel):
         super().__init__(config)
 
         self.mobilebert = MobileBertModel(config)
-        self.dropout = nn.Dropout(config.classifier_dropout)
+        classifier_dropout = (
+            config.classifier_dropout if config.classifier_dropout is not None else config.hidden_dropout_prob
+        )
+        self.dropout = nn.Dropout(classifier_dropout)
         self.classifier = nn.Linear(config.hidden_size, 1)
 
         self.init_weights()