diff --git a/pyiron_atomistics/atomistics/structure/periodic_table.py b/pyiron_atomistics/atomistics/structure/periodic_table.py
index 84690c589..7c2529e23 100644
--- a/pyiron_atomistics/atomistics/structure/periodic_table.py
+++ b/pyiron_atomistics/atomistics/structure/periodic_table.py
@@ -398,7 +398,7 @@ def _get_periodic_table_df(file_name):
         if not file_name:
             return pandas.read_csv(
                 io.BytesIO(
-                    pkgutil.get_data("pyiron_atomistics", "_data/periodic_table.csv")
+                    pkgutil.get_data("pyiron_atomistics", "data/periodic_table.csv")
                 ),
                 index_col=0,
             )
diff --git a/pyiron_atomistics/_data/periodic_table.csv b/pyiron_atomistics/data/periodic_table.csv
similarity index 100%
rename from pyiron_atomistics/_data/periodic_table.csv
rename to pyiron_atomistics/data/periodic_table.csv
diff --git a/setup.py b/setup.py
index 9143af0e4..e730f775e 100644
--- a/setup.py
+++ b/setup.py
@@ -61,5 +61,5 @@
         'structuretoolkit==0.0.11'
     ],
     cmdclass=versioneer.get_cmdclass(),
-    package_data={'': ['_data/*.csv']},
+    package_data={'': ['data/*.csv']},
     )