diff --git a/src/Dofs/sparsity_pattern.jl b/src/Dofs/sparsity_pattern.jl
index e34d34f1b5..0d1c0fbb44 100644
--- a/src/Dofs/sparsity_pattern.jl
+++ b/src/Dofs/sparsity_pattern.jl
@@ -263,7 +263,7 @@ Add entries corresponding to DoF couplings within the cells.
 function add_cell_entries!(
         sp::AbstractSparsityPattern,
         dh::DofHandler, ch::Union{ConstraintHandler, Nothing} = nothing;
-        keep_constrained::Bool, coupling::Union{AbstractMatrix{Bool}, Nothing},
+        keep_constrained::Bool = true, coupling::Union{AbstractMatrix{Bool}, Nothing} = nothing,
     )
     # Expand coupling from nfields × nfields to ndofs_per_cell × ndofs_per_cell
     # TODO: Perhaps this can be done in the loop over SubDofHandlers instead.
diff --git a/test/test_sparsity_patterns.jl b/test/test_sparsity_patterns.jl
index 3c104aee29..3b02c41873 100644
--- a/test/test_sparsity_patterns.jl
+++ b/test/test_sparsity_patterns.jl
@@ -263,7 +263,7 @@ end
     ps = make_patterns(dh)
     for p in ps
         add_cell_entries!(p, dh)
-        add_constraint_entries!(p, dh)
+        add_constraint_entries!(p, ch)
     end
     compare_patterns(ps...)