diff --git a/ho_basis.jl b/ho_basis.jl
index e51ebd0..0307baa 100644
--- a/ho_basis.jl
+++ b/ho_basis.jl
@@ -1,5 +1,4 @@
 using SparseArrays
-using NuclearToolkit
 using SpecialFunctions
 include("helper.jl")
 
@@ -84,15 +83,6 @@ function sp_V_matrix(V_l, ns, ls; mask=trues(length(ns),length(ns)), dtype=Float
 end
 
 function Moshinsky_transform(Es, n1s, l1s, n2s, l2s, Λ)
-    E_max = maximum(Es)
-    j_max = 2 * E_max + 1
-    l_max = j_max
-    to = 0 # unused
-    
-    dtri = NuclearToolkit.prep_dtri(l_max + 1);
-    dcgm0 = NuclearToolkit.prep_dcgm0(l_max);
-    d6j = nothing # NuclearToolkit.prep_d6j_int(E_max, j_max, to);
-    
     mat = spzeros(length(Es), length(Es))
     s = hcat(Es, n1s, l1s, n2s, l2s)
     for idx in CartesianIndices(mat)
@@ -100,9 +90,11 @@ function Moshinsky_transform(Es, n1s, l1s, n2s, l2s, Λ)
         (Elhs, N, L, n, l) = s[i, :]
         (Erhs, n1, l1, n2, l2) = s[j, :]
         if Elhs == Erhs && triangle_ineq(L, l, Λ) && triangle_ineq(l1, l2, Λ)
-            mat[i, j] = NuclearToolkit.HObracket_d6j(N, L, n, l, n1, l1, n2, l2, Λ, 1.0, dtri, dcgm0, d6j)
+            mat[i, j] = get_bracket(N, L, n, l, n1, l1, n2, l2, Λ, 1.0)
         end
     end
 
     return mat
 end
+
+get_bracket(N, L, n, l, n1, l1, n2, l2, Λ, d) = @ccall "../cosmo/bin/shared.so"._Z24MoshinskyBracketsWrapperiiiiiiiiid(n::Cint,l::Cint,N::Cint,L::Cint,n1::Cint,l1::Cint,n2::Cint,l2::Cint,Λ::Cint,d::Cdouble)::Cdouble