diff --git a/egs/librispeech/ASR/incremental_transf/.train.py.swp b/egs/librispeech/ASR/incremental_transf/.train.py.swp
index 81afe3cf6..eddef1214 100644
Binary files a/egs/librispeech/ASR/incremental_transf/.train.py.swp and b/egs/librispeech/ASR/incremental_transf/.train.py.swp differ
diff --git a/egs/librispeech/ASR/incremental_transf/train.py b/egs/librispeech/ASR/incremental_transf/train.py
index eb086e5a8..2d35ef0ef 100755
--- a/egs/librispeech/ASR/incremental_transf/train.py
+++ b/egs/librispeech/ASR/incremental_transf/train.py
@@ -992,7 +992,10 @@ def run(rank, world_size, args):
                 old_name = '.'.join(layer_name_splited)
                 try: p.data = pre_trained_model2[old_name]
                 except: print(f'pre-trained model has no parameter named {n}.')
-
+    del pre_trained1
+    del pre_trained2
+    del pre_trained_model1
+    del pre_trained_model2