diff --git a/modules/em/test/test_bayesem3d_logsumexp.py b/modules/em/test/test_bayesem3d_logsumexp.py
index 03ab312522..524a02ef53 100644
--- a/modules/em/test/test_bayesem3d_logsumexp.py
+++ b/modules/em/test/test_bayesem3d_logsumexp.py
@@ -5,7 +5,7 @@
 
 
 def add_logabssumprodexp(a, b):
-    s = - np.Inf
+    s = - np.inf
     ss = -1
     for i in range(len(a)):
         s, ss = IMP.em.bayesem3d_get_logabssumprodexp(s, a[i], ss, b[i])