diff --git a/src/ansys/dpf/core/geometry.py b/src/ansys/dpf/core/geometry.py
index 4605487e09..110d30af46 100644
--- a/src/ansys/dpf/core/geometry.py
+++ b/src/ansys/dpf/core/geometry.py
@@ -20,7 +20,14 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-"""Module containing the different geometry objects."""
+"""
+.. _ref_geometry:
+
+Geometry
+========
+Module containing the different geometry objects.
+
+"""
 
 from ansys.dpf import core as dpf
 
diff --git a/src/ansys/dpf/core/geometry_factory.py b/src/ansys/dpf/core/geometry_factory.py
index ba616c5aef..327fe2d393 100644
--- a/src/ansys/dpf/core/geometry_factory.py
+++ b/src/ansys/dpf/core/geometry_factory.py
@@ -20,7 +20,14 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-"""Geometry factory module containing functions to create the different geometries."""
+"""
+.. _ref_geometry_factory:
+
+Geometry Factory
+================
+Geometry factory module containing functions to create the different geometries.
+
+"""
 
 import numpy as np