diff --git a/tests/test_potential.py b/tests/test_potential.py
index 58965c237..c21a11f50 100644
--- a/tests/test_potential.py
+++ b/tests/test_potential.py
@@ -6026,7 +6026,7 @@ def pot(R, z, amp=1.0, a=0.75):
                 * special.jv(0, k * a)
                 * numpy.exp(-k * numpy.fabs(z)),
                 0.0,
-                numpy.infty,
+                numpy.inf,
             )[0]
         )