diff --git a/src/operators.jl b/src/operators.jl
index eebe8bd2..1aab8c82 100644
--- a/src/operators.jl
+++ b/src/operators.jl
@@ -1,7 +1,6 @@
 using Base.Iterators
 using CombinatorialSpaces
 import CombinatorialSpaces.DiscreteExteriorCalculus: DiscreteHodge
-using CombinatorialSpaces.Multigrid: PrimitiveGeometricMapSeries
 using Krylov
 using LinearAlgebra
 using SparseArrays
@@ -9,7 +8,7 @@ using KernelAbstractions
 
 function default_dec_cu_matrix_generate() end;
 
-function default_dec_matrix_generate(fs::PrimitiveGeometricMapSeries, my_symbol::Symbol, hodge::DiscreteHodge)
+function default_dec_matrix_generate(fs::PrimalGeometricMapSeries, my_symbol::Symbol, hodge::DiscreteHodge)
   op = @match my_symbol begin
     :Δ₀⁻¹ => dec_Δ⁻¹(Val{0}, fs)
     _ => default_dec_matrix_generate(finest_mesh(fs), my_symbol, hodge)
diff --git a/test/simulation.jl b/test/simulation.jl
index cc1cb192..01a27437 100644
--- a/test/simulation.jl
+++ b/test/simulation.jl
@@ -751,7 +751,7 @@ end
 @testset "Multigrid" begin
   s = triangulated_grid(1,1,1/4,sqrt(3)/2*1/4,Point3D)
 
-  series = PrimitiveGeometricMapSeries(s, binary_subdivision_map, 4);
+  series = PrimalGeometricMapSeries(s, binary_subdivision_map, 4);
 
   our_mesh = finest_mesh(series)
   lap = ∇²(0,our_mesh);