diff --git a/examples/aishell/s1/local/download_lm_ch.sh b/examples/aishell/s1/local/download_lm_ch.sh
deleted file mode 120000
index 6541d91c..00000000
--- a/examples/aishell/s1/local/download_lm_ch.sh
+++ /dev/null
@@ -1 +0,0 @@
-../../s0/local/download_lm_ch.sh
\ No newline at end of file
diff --git a/examples/dataset/librispeech/librispeech.py b/examples/dataset/librispeech/librispeech.py
index f549a95f..d34c3223 100644
--- a/examples/dataset/librispeech/librispeech.py
+++ b/examples/dataset/librispeech/librispeech.py
@@ -114,7 +114,7 @@ def create_manifest(data_dir, manifest_path):
         for line in json_lines:
             out_file.write(line + '\n')
 
-    subset = os.path.splitext(manifest_path)[1]
+    subset = manifest_path
     with open(subset + '.meta', 'w') as f:
         print(f"{subset}:", file=f)
         print(f"{total_num} utts", file=f)
diff --git a/examples/librispeech/s0/conf/augmentation.json b/examples/librispeech/s0/conf/augmentation.json
index 5635d9c8..1987ad42 100644
--- a/examples/librispeech/s0/conf/augmentation.json
+++ b/examples/librispeech/s0/conf/augmentation.json
@@ -15,5 +15,20 @@
       "max_shift_ms": 5
     },
     "prob": 1.0
+  },
+  {
+    "type": "specaug",
+    "params": {
+      "F": 10,
+      "T": 50,
+      "n_freq_masks": 2,
+      "n_time_masks": 2,
+      "p": 1.0,
+      "W": 80,
+      "adaptive_number_ratio": 0,
+      "adaptive_size_ratio": 0,
+      "max_n_time_masks": 20
+    },
+    "prob": 1.0
   }
 ]
diff --git a/examples/librispeech/s1/README.md b/examples/librispeech/s1/README.md
index 5b4130bb..17afa1c0 100644
--- a/examples/librispeech/s1/README.md
+++ b/examples/librispeech/s1/README.md
@@ -15,10 +15,10 @@
 
 | Model | Params | Config | Augmentation| Test set | Decode method | Chunk Size & Left Chunks | Loss | WER |  
 | --- | --- | --- | --- | --- | --- | --- | --- | --- |  
-| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | attention | 16, -1 | 7.01250648 |  |  
-| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | ctc_greedy_search | 16, -1 | 7.01250648 |  |  
+| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | attention | 16, -1 | 7.01250648 | 0.069548 |  
+| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | ctc_greedy_search | 16, -1 | 7.01250648 | 0.094753 |  
 | conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | ctc_prefix_beam_search | 16, -1 | 7.01250648 |  |  
-| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | attention_rescoring | 16, -1 | 7.01250648 | |  
+| conformer | 47.63 M | conf/chunk_conformer.yaml | spec_aug + shift | test-clean | attention_rescoring | 16, -1 | 7.01250648 |  |  
 
 
 
diff --git a/examples/librispeech/s1/conf/chunk_confermer.yaml b/examples/librispeech/s1/conf/chunk_conformer.yaml
similarity index 99%
rename from examples/librispeech/s1/conf/chunk_confermer.yaml
rename to examples/librispeech/s1/conf/chunk_conformer.yaml
index d78ce740..7a4ddf5d 100644
--- a/examples/librispeech/s1/conf/chunk_confermer.yaml
+++ b/examples/librispeech/s1/conf/chunk_conformer.yaml
@@ -81,7 +81,7 @@ model:
 
 
 training:
-  n_epoch: 120
+  n_epoch: 240
   accum_grad: 8
   global_grad_clip: 5.0
   optim: adam
diff --git a/examples/tiny/s1/local/download_lm_en.sh b/examples/tiny/s1/local/download_lm_en.sh
deleted file mode 120000
index 831f3c31..00000000
--- a/examples/tiny/s1/local/download_lm_en.sh
+++ /dev/null
@@ -1 +0,0 @@
-../../s0/local/download_lm_en.sh
\ No newline at end of file
diff --git a/tools/Makefile b/tools/Makefile
index 94e5ea2f..08cb9955 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -18,7 +18,7 @@ kenlm.done:
 	apt install -y build-essential cmake libboost-system-dev libboost-thread-dev libboost-program-options-dev libboost-test-dev libeigen3-dev zlib1g-dev libbz2-dev liblzma-dev
 	apt-get install -y gcc-5 g++-5 && update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 50  && update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-5 50
 	test -d kenlm || wget -O - https://kheafield.com/code/kenlm.tar.gz | tar xz
-	mkdir -p kenlm/build && cd kenlm/build && cmake .. && make -j4 && make install
+	rm -rf kenlm/build && mkdir -p kenlm/build && cd kenlm/build && cmake .. && make -j4 && make install
 	source venv/bin/activate; cd kenlm && python setup.py install
 	touch kenlm.done