diff --git a/openmc/mesh.py b/openmc/mesh.py
index 10d07000e5..06f0246768 100644
--- a/openmc/mesh.py
+++ b/openmc/mesh.py
@@ -1049,6 +1049,8 @@ class CylindricalMesh(StructuredMesh):
         The default value is [0, 2π], i.e. the full phi range.
     z_grid : numpy.ndarray
         1-D array of mesh boundary points along the z-axis.
+    origin : tuple
+        The (x,y,z) origin of the mesh in cartesian coordinates
     indices : Iterable of tuple
         An iterable of mesh indices for each mesh element, e.g. [(1, 1, 1),
         (2, 1, 1), ...]
@@ -1376,6 +1378,8 @@ class SphericalMesh(StructuredMesh):
     phi_grid : numpy.ndarray
         1-D array of mesh boundary points along the phi-axis in radians.
         The default value is [0, 2π], i.e. the full phi range.
+    origin : tuple
+        The (x,y,z) origin of the mesh in cartesian coordinates
     indices : Iterable of tuple
         An iterable of mesh indices for each mesh element, e.g. [(1, 1, 1),
         (2, 1, 1), ...]