diff --git a/.travis.yml b/.travis.yml
index d5b22c5..971e3c8 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -36,7 +36,7 @@ install:
 script:
     - pytest -s -r xX --cov-config .coveragerc --cov=pandas_helper_calc --cov-report xml:/tmp/cov-pandas_helper_calc.xml --junitxml=/tmp/pandas_helper_calc.xml
     - flake8 --version
-    - flake8 pandas_datareader
+    - flake8 setup.py pandas_helper_calc tests
 
 after_success:
   - coveralls
diff --git a/README.md b/README.md
index 203a980..398f135 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,5 @@
+[![Build Status](https://travis-ci.com/scls19fr/pandas-helper-calc.svg?branch=master)](https://travis-ci.com/scls19fr/pandas-helper-calc)
+
 # pandas-helper-calc
 
 Some helper methods for Pandas Series and DataFrames to calculate numerically derivative and integral.
@@ -10,4 +12,4 @@ $ pip install git+https://github.com/scls19fr/pandas-helper-calc
 
 ## Usage
 
-See `tests/test_pandas_helper_calc.py`.
+See [`tests/test_pandas_helper_calc.py`](https://github.com/scls19fr/pandas-helper-calc/blob/master/tests/test_pandas_helper_calc.py).