diff --git a/doc/conf.py b/doc/conf.py
index 9c80ec3..9191a78 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -69,7 +69,7 @@
 
 # General information about the project.
 project = u'windpowerlib'
-copyright = u'2016-2021, oemof developer group'
+copyright = u'2016-2023, oemof developer group'
 author = u'oemof developer group'
 
 import windpowerlib
diff --git a/example/modelchain_example.ipynb b/example/modelchain_example.ipynb
index 5afb2eb..6aadba7 100644
--- a/example/modelchain_example.ipynb
+++ b/example/modelchain_example.ipynb
@@ -518,7 +518,7 @@
     "            x='wind_speed', y='value', style='*',\n",
     "            title='Enercon E126 power coefficient curve')\n",
     "        plt.xlabel('Wind speed in m/s')\n",
-    "        plt.ylabel('Power in W')\n",
+    "        plt.ylabel('Power coefficient $\\mathrm{C}_\\mathrm{P}$')\n",
     "        plt.show()\n",
     "    if e126.power_curve is not None:\n",
     "        e126.power_curve.plot(x='wind_speed', y='value', style='*',\n",
diff --git a/example/modelchain_example.py b/example/modelchain_example.py
index 18e4916..bcca0f3 100644
--- a/example/modelchain_example.py
+++ b/example/modelchain_example.py
@@ -274,7 +274,7 @@ def plot_or_print(my_turbine, e126, my_turbine2):
                 title="Enercon E126 power curve",
             )
             plt.xlabel("Wind speed in m/s")
-            plt.ylabel("Power in W")
+            plt.ylabel("Power coefficient $\mathrm{C}_\mathrm{P}$")
             plt.show()
         if my_turbine.power_curve is not False:
             my_turbine.power_curve.plot(
diff --git a/setup.py b/setup.py
index a9fb4e5..438f425 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,8 @@ def read(fname):
     packages=["windpowerlib"],
     package_data={
         "windpowerlib": [
-            os.path.join("data", "*.csv"),
+            os.path.join("data", "**.csv"),
+            os.path.join("data", "default_turbine_data", "*.csv"),
             os.path.join("oedb", "*.csv"),
         ]
     },
diff --git a/windpowerlib/wind_turbine.py b/windpowerlib/wind_turbine.py
index 6655666..fd068fa 100644
--- a/windpowerlib/wind_turbine.py
+++ b/windpowerlib/wind_turbine.py
@@ -78,7 +78,7 @@ class WindTurbine(object):
         corresponding power curve value in W. Default: None.
     nominal_power : None or float
         The nominal output of the wind turbine in W. Default: None.
-   
+
     Notes
     ------
     Your wind turbine object needs to have a power coefficient or power curve.