diff --git a/firedrake/mg/mesh.py b/firedrake/mg/mesh.py
index b64499ac87..9a7fa8e4ed 100644
--- a/firedrake/mg/mesh.py
+++ b/firedrake/mg/mesh.py
@@ -20,7 +20,6 @@
 
 class HierarchyBase(object):
     """Create an encapsulation of an hierarchy of meshes.
-
     :arg meshes: list of meshes (coarse to fine)
     :arg coarse_to_fine_cells: list of numpy arrays for each level
        pair, mapping each coarse cell into fine cells it intersects.
@@ -99,8 +98,8 @@ def MeshHierarchy(mesh, refinement_levels,
         level in the hierarchy.
     :arg degree : int
         the degree of the finite element space used for
-        isoparametric representation of the geometry. Only relevant
-        if mesh is a Netgen mesh.
+        isoparametric representation of the geometry.
+        Only relevant if mesh is a Netgen mesh.
     :arg distribution_parameters : dict
         options controlling mesh distribution, see
         :func:`~.Mesh` for details.  If ``None``, use