diff --git a/.travis/unittest.sh b/.travis/unittest.sh
index ad223eb4a9c1f57896762ad38d0b3fa5de5c496b..4195a441eac5f091e49b6203dbd2c637fee6ab69 100755
--- a/.travis/unittest.sh
+++ b/.travis/unittest.sh
@@ -10,6 +10,7 @@ unittest(){
     cd $1 > /dev/null
     if [ -f "setup.sh" ]; then
         sh setup.sh
+        export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
     fi
     if [ $? != 0 ]; then
         exit 1
diff --git a/deep_speech_2/README.md b/deep_speech_2/README.md
index 3010c0e536da732f1c4f042c82badaae21179f87..22d0c5386c54c23966cfc9355d1d67756a37b594 100644
--- a/deep_speech_2/README.md
+++ b/deep_speech_2/README.md
@@ -8,9 +8,6 @@ Please replace `$PADDLE_INSTALL_DIR` with your own paddle installation directory
 sh setup.sh
 export LD_LIBRARY_PATH=$PADDLE_INSTALL_DIR/Paddle/third_party/install/warpctc/lib:$LD_LIBRARY_PATH
 ```
-
-For some machines, we also need to install libsndfile1. Details to be added.
-
 ## Usage
 
 ### Preparing Data
diff --git a/deep_speech_2/requirements.txt b/deep_speech_2/requirements.txt
index 721fa2811081e530a9cec3b2e403ad2372b59269..3f73ea8b8085324b3691c6af44915f0d09888221 100755
--- a/deep_speech_2/requirements.txt
+++ b/deep_speech_2/requirements.txt
@@ -1,5 +1,6 @@
 wget==3.2
 scipy==0.13.1
 resampy==0.1.5
-https://github.com/kpu/kenlm/archive/master.zip
+SoundFile==0.9.0.post1
 python_speech_features
+https://github.com/kpu/kenlm/archive/master.zip
diff --git a/deep_speech_2/setup.sh b/deep_speech_2/setup.sh
index 8cba91ecdb68b42125181331471f9ee323062a24..4d451a6f16ab56bb52bdf3cf0998e680b6d3b243 100644
--- a/deep_speech_2/setup.sh
+++ b/deep_speech_2/setup.sh
@@ -9,22 +9,21 @@ if [ $? != 0 ]; then
     exit 1
 fi
 
-# install package Soundfile
-curl -O "http://www.mega-nerd.com/libsndfile/files/libsndfile-1.0.28.tar.gz"
+# install package libsndfile
+python -c "import soundfile"
 if [ $? != 0 ]; then
-    echo "Download libsndfile-1.0.28.tar.gz failed !!!"
-    exit 1
-fi
-tar -zxvf libsndfile-1.0.28.tar.gz
-cd libsndfile-1.0.28
-./configure && make && make install
-cd -
-rm -rf libsndfile-1.0.28
-rm libsndfile-1.0.28.tar.gz
-pip install SoundFile==0.9.0.post1
-if [ $? != 0 ]; then
-    echo "Install SoundFile failed !!!"
-    exit 1
+    echo "Install package libsndfile into default system path."
+    curl -O "http://www.mega-nerd.com/libsndfile/files/libsndfile-1.0.28.tar.gz"
+    if [ $? != 0 ]; then
+        echo "Download libsndfile-1.0.28.tar.gz failed !!!"
+        exit 1
+    fi
+    tar -zxvf libsndfile-1.0.28.tar.gz
+    cd libsndfile-1.0.28
+    ./configure && make && make install
+    cd ..
+    rm -rf libsndfile-1.0.28
+    rm libsndfile-1.0.28.tar.gz
 fi
 
 # prepare ./checkpoints
diff --git a/deep_speech_2/tests/test_setup.py b/deep_speech_2/tests/test_setup.py
new file mode 100644
index 0000000000000000000000000000000000000000..18b9c1a0ce5333f559383b18704edf7270457fcf
--- /dev/null
+++ b/deep_speech_2/tests/test_setup.py
@@ -0,0 +1,23 @@
+"""Test Setup."""
+import unittest
+import numpy as np
+import os
+
+
+class TestSetup(unittest.TestCase):
+    def test_soundfile(self):
+        import soundfile as sf
+        # floating point data is typically limited to the interval [-1.0, 1.0],
+        # but smaller/larger values are supported as well
+        data = np.array([[1.75, -1.75], [1.0, -1.0], [0.5, -0.5],
+                         [0.25, -0.25]])
+        file = 'test.wav'
+        sf.write(file, data, 44100, format='WAV', subtype='FLOAT')
+        read, fs = sf.read(file)
+        self.assertTrue(np.all(read == data))
+        self.assertEqual(fs, 44100)
+        os.remove(file)
+
+
+if __name__ == '__main__':
+    unittest.main()