diff --git a/pygedm/ne2001_wrapper.py b/pygedm/ne2001_wrapper.py
index 211b755..974a253 100644
--- a/pygedm/ne2001_wrapper.py
+++ b/pygedm/ne2001_wrapper.py
@@ -99,11 +99,12 @@ def dm_to_dist(l, b, dm, nu=1.0, full_output=False):
         return 0.0 * u.pc, 0.0 * u.s
     else:
         d = ne21c.dm_to_dist(l_rad, b_rad, dm)
+    tau_sc = TAUISS(float(d['dist']), d['smtau'], nu=nu)
 
     if not full_output:
-        tau_sc = TAUISS(float(d['dist']), d['smtau'], nu=nu)
         return (float(d['dist']) * u.kpc).to('pc'), tau_sc * u.s
     else:
+        d['tau_sc'] = tau_sc
         return d
 
 
@@ -128,11 +129,12 @@ def dist_to_dm(l, b, dist, nu=1.0, full_output=False):
         return 0.0 * u.pc / u.cm**3, 0.0 * u.s
     else:
         d = ne21c.dist_to_dm(l_rad, b_rad, dist)
+    tau_sc = TAUISS(float(dist), d['smtau'], nu=nu)
 
     if not full_output:
-        tau_sc = TAUISS(float(dist), d['smtau'], nu=nu)
         return float(d['dm']) * u.pc / u.cm**3, tau_sc * u.s
     else:
+        d['tau_sc'] = tau_sc
         return d
 
 @run_from_pkgdir
diff --git a/tests/test_basic_ne2001.py b/tests/test_basic_ne2001.py
index 6a931a4..7fdd91a 100644
--- a/tests/test_basic_ne2001.py
+++ b/tests/test_basic_ne2001.py
@@ -113,7 +113,7 @@ def test_dm_wrapper_b0353():
     assert np.isclose(dist.to('kpc').value, 2.746, atol=0.01, rtol=0)
     assert np.isclose(tau_sc.to('us').value, 6.57, atol=0.01, rtol=0)
 
-test_full_output():
+def test_full_output():
     """ Make sure full_output arg works """
     a = pygedm.ne2001_wrapper.dist_to_dm(0, 0, 0.1, full_output=True)
     b = pygedm.ne2001_wrapper.dm_to_dist(0, 0, 10, full_output=True)
@@ -128,3 +128,4 @@ def test_dm_wrapper_b0353():
     test_igm()
     test_dm_wrapper()
     test_dm_wrapper_b0353()
+    test_full_output()