diff --git a/doc/source/docs/user_guide/geometric_manipulations.rst b/doc/source/docs/user_guide/geometric_manipulations.rst
index d29eeb6..614251c 100644
--- a/doc/source/docs/user_guide/geometric_manipulations.rst
+++ b/doc/source/docs/user_guide/geometric_manipulations.rst
@@ -18,7 +18,7 @@ Constructive Methods
 .. attribute:: GeoSeries.boundary
 
   Returns a :class:`~geopandas.GeoSeries` of lower dimensional objects representing
-  each geometries's set-theoretic `boundary`.
+  each geometry's set-theoretic `boundary`.
 
 .. attribute:: GeoSeries.centroid
 
diff --git a/geopandas/base.py b/geopandas/base.py
index b5a4450..437a611 100644
--- a/geopandas/base.py
+++ b/geopandas/base.py
@@ -424,7 +424,7 @@ GeometryCollection
     @property
     def boundary(self):
         """Returns a ``GeoSeries`` of lower dimensional objects representing
-        each geometries's set-theoretic `boundary`.
+        each geometry's set-theoretic `boundary`.
 
         Examples
         --------