diff --git a/tests/test_solver.py b/tests/test_solver.py
index fc832f9f54bda2a7a77eee0ac806a4c0975cbcc1..f830560cad88216163881b8d3027bd98fdee7730 100644
--- a/tests/test_solver.py
+++ b/tests/test_solver.py
@@ -332,6 +332,7 @@ def test_soc_analytic(T, n, alpha_soc):
         gm = (ww + 1j * h) / np.sqrt((ww + 1j * h) ** 2 + 1)
         fp = 1 / np.sqrt((ww - 1j * h) ** 2 + 1)
         fm = 1 / np.sqrt((ww + 1j * h) ** 2 + 1)
+        # XXX: check the 32*alpha
         Jy_an = (
             (gp - gm) * (1 + gp * gm + fp * fm) * (-1j * alpha_soc**3) * (32 * alpha)
         )