diff --git a/simpegEM/Tests/test_FDEMCasing.py b/simpegEM/Tests/test_FDEMCasing.py
index 21135a09..3efdcf52 100644
--- a/simpegEM/Tests/test_FDEMCasing.py
+++ b/simpegEM/Tests/test_FDEMCasing.py
@@ -7,7 +7,7 @@ n = 50.
 freq = 1.
 a = 5e-2
 b = a + 1e-2
-sigma = np.r_[1., 5.5e6, 1e-1]
+sigma = np.r_[10., 5.5e6, 1e-1]
 srcloc = np.r_[0., 0., 0.]
 xobs = np.random.rand(n)+10.
 yobs = np.zeros(n)