diff --git a/tests/test_shift_inversion_dask.py b/tests/test_shift_inversion_dask.py
index e5fa9b5b4cb6c6d3a883cb80daac6c180c08c0ee..f32568331a4ad6dabf2eb8c3f33ea84b74dc7f02 100644
--- a/tests/test_shift_inversion_dask.py
+++ b/tests/test_shift_inversion_dask.py
@@ -4,7 +4,10 @@ import numpy as np
 import pytest
 
 from lisainstrument.dynamic_delay_dask import numpyfy_dask_multi
-from lisainstrument.shift_inversion_dask import make_shift_inverse_lagrange_dask
+from lisainstrument.shift_inversion_dask import (
+    make_shift_inverse_dsp_dask,
+    make_shift_inverse_lagrange_dask,
+)
 from lisainstrument.shift_inversion_numpy import make_shift_inverse_lagrange_numpy
 
 
@@ -44,7 +47,18 @@ def test_shift_inversion_dask():
     )
     op_na = numpyfy_dask_multi(op_da, chunks)
 
+    op_dsp_da = make_shift_inverse_dsp_dask(
+        order=order,
+        fsample=fsample,
+        max_abs_shift=a_mod * 1.01,
+        max_iter=max_it,
+        tolerance=tol,
+    )
+    op_dsp_na = numpyfy_dask_multi(op_dsp_da, chunks)
+
     ai_np = op_np(dxi)
     ai_na = op_na(dxi)
+    ai_dsp_na = op_dsp_na(dxi)
 
     assert ai_np == pytest.approx(ai_na, abs=tol, rel=0)
+    assert ai_dsp_na == pytest.approx(ai_na, abs=tol, rel=0)