diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d23c07b524544f20bf03ef052a9f8867035425bf..16d0daf6b3c09b609fc5658877c3387ca163b493 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -9,7 +9,7 @@ tests:
         - pip3 install --no-deps .
         - python3 -c "from tffpy.utils import generate_config; generate_config()"
         - pwd
-        - python3 -c "from configparser import ConfigParser; from pathlib import Path; config.read('/root/.config/tffpy.conf'); config.set('DATA', 'data_path', str(Path(__file__.parent / 'data')); config
+        - python3 -c "from configparser import ConfigParser; from pathlib import Path; config.read('/root/.config/tffpy.conf'); config.set('DATA', 'data_path', '/builds/skmad-suite/tff2020/data'); config.write(open('/root/.config/tffpy.conf', 'w'))"
         - pytest-3
 
 # generate the documentation
@@ -25,9 +25,7 @@ pages:
         - pip3 install --no-deps .
         - python3 setup.py build_sphinx
         - python3 -c "from tffpy.utils import generate_config; generate_config()"
-        - pwd
-        - python3 -c "from configparser import ConfigParser; from pathlib import Path; config.read('/root/.config/tffpy.conf'); config.set('DATA', 'data_path', str(Path(__file__.parent / 'data')); config
-        - .write(open('/root/.config/tffpy.conf', 'w'))"
+        - python3 -c "from configparser import ConfigParser; from pathlib import Path; config.read('/root/.config/tffpy.conf'); config.set('DATA', 'data_path', '/builds/skmad-suite/tff2020/data'); config.write(open('/root/.config/tffpy.conf', 'w'))"
         - cp -r build/sphinx/html public
     artifacts:
         paths:
diff --git a/python/tffpy/tf_tools.py b/python/tffpy/tf_tools.py
index 9baa89a8ec9d9df65a6fddbad316dea0b56c1c58..a3dd2d548d243684e84d71e81440c18f9206530f 100755
--- a/python/tffpy/tf_tools.py
+++ b/python/tffpy/tf_tools.py
@@ -15,6 +15,28 @@ from tffpy.utils import plot_mask, plot_win
 
 def get_dgt_params(win_type, approx_win_len, hop, n_bins,
                    phase_conv='freqinv', sig_len=None):
+    """
+    Build dictionary of DGT parameter
+
+    Parameters
+    ----------
+    win_type : str
+        Window name, e.g. 'hann', 'gauss'
+    approx_win_len : int
+        Approximate window length for FIR windows and
+    hop : int
+        Hop size
+    n_bins : int
+        Number of frequency bins
+    phase_conv :
+        Phase convention
+    sig_len : int
+        Signal length
+
+    Returns
+    -------
+
+    """
     supported_wins = arg_firwin() | {'gauss'}
     msg = '{} not supported, try {}'.format(win_type, supported_wins)
     assert win_type in supported_wins, msg