diff --git a/06.understand_sentiment/train_dyn_rnn.py b/06.understand_sentiment/train_dyn_rnn.py
index e139d670f96958ecec794ee32a252d08e8f5d552..f548a27f6fb41acc0888aa61967c47a4a110fa51 100644
--- a/06.understand_sentiment/train_dyn_rnn.py
+++ b/06.understand_sentiment/train_dyn_rnn.py
@@ -24,6 +24,7 @@ CLASS_DIM = 2
 EMB_DIM = 128
 BATCH_SIZE = 128
 LSTM_SIZE = 128
+USE_GPU = False
 
 
 def dynamic_rnn_lstm(data, input_dim, class_dim, emb_dim, lstm_size):
diff --git a/06.understand_sentiment/train_stacked_lstm.py b/06.understand_sentiment/train_stacked_lstm.py
index 0a3b201579b17cacb031e55e970a1ca5188516b6..104215d7d9c212cef3991442ebd6a2ab5bd03d93 100644
--- a/06.understand_sentiment/train_stacked_lstm.py
+++ b/06.understand_sentiment/train_stacked_lstm.py
@@ -25,6 +25,7 @@ EMB_DIM = 128
 HID_DIM = 512
 STACKED_NUM = 3
 BATCH_SIZE = 128
+USE_GPU = False
 
 
 def stacked_lstm_net(data, input_dim, class_dim, emb_dim, hid_dim, stacked_num):