diff --git a/openmc/mesh.py b/openmc/mesh.py
index 4059fee2d3..59d64a1464 100644
--- a/openmc/mesh.py
+++ b/openmc/mesh.py
@@ -1052,6 +1052,7 @@ class CylindricalMesh(StructuredMesh):
         self._r_grid = None
         self._phi_grid = [0.0, 2*pi]
         self._z_grid = None
+        self._centre = [0, 0, 0]
 
     @property
     def dimension(self):
@@ -1284,6 +1285,7 @@ class SphericalMesh(StructuredMesh):
         self._r_grid = None
         self._theta_grid = [0, pi]
         self._phi_grid = [0, 2*pi]
+        self._centre = [0, 0, 0]
 
     @property
     def dimension(self):