diff --git a/pandapipes/test/pipeflow_internals/test_inservice.py b/pandapipes/test/pipeflow_internals/test_inservice.py
index bec68b47..54acfaf7 100644
--- a/pandapipes/test/pipeflow_internals/test_inservice.py
+++ b/pandapipes/test/pipeflow_internals/test_inservice.py
@@ -237,8 +237,8 @@ def test_connectivity_hydraulic(create_test_net, use_numba):
     assert np.all(np.isnan(net.res_pipe.loc[[1, 2, 3], :].values))
     assert not np.any(np.isnan(net.res_junction.loc[[0, 1, 3, 4], :].values))
     assert not np.any(np.isnan(net.res_pipe.loc[[0, 4],
-    ["v_mean_m_per_s", "p_from_bar",
-     "p_to_bar"]].values))
+                                                ["v_mean_m_per_s", "p_from_bar",
+                                                 "p_to_bar"]].values))
     assert not np.any(np.isnan(net.res_sink.loc[[0, 2], "mdot_kg_per_s"].values))
     assert np.all(np.isnan(net.res_sink.loc[[1, 3, 4], "mdot_kg_per_s"].values))
 
diff --git a/setup.py b/setup.py
index 4608f4c5..4c22eda5 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 # and Energy System Technology (IEE), Kassel, and University of Kassel. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
 
-from setuptools import find_namespace_packages
+from setuptools import find_packages
 from setuptools import setup
 import re
 
@@ -49,8 +49,7 @@
                     "test": ["pytest", "pytest-xdist", "nbmake"],
                     "all": ["numpydoc", "sphinx", "sphinx_rtd_theme", "sphinxcontrib.bibtex",
                             "plotly", "igraph", "pytest", "pytest-xdist", "nbmake"]},
-    packages=find_namespace_packages(where="pandapipes"),
-    package_dir={"": "pandapipes"},
+    packages=find_packages(),
     include_package_data=True,
     classifiers=classifiers
 )