diff --git a/openmc/mgxs_library.py b/openmc/mgxs_library.py
index f3e7b92184..ea6407f968 100644
--- a/openmc/mgxs_library.py
+++ b/openmc/mgxs_library.py
@@ -289,7 +289,10 @@ class XSdata(object):
             check_value('num_points', num_points, Integral)
             check_greater_than('num_points', num_points, 0)
         else:
-            num_points = 33
+            if enable == False:
+                num_points = 1
+            else:
+                num_points = 33
         self._tabular_legendre = {'enable': enable, 'num_points': num_points}
 
     @num_polar.setter
diff --git a/src/mgxs_data.F90 b/src/mgxs_data.F90
index 94546c10dc..715b52b132 100644
--- a/src/mgxs_data.F90
+++ b/src/mgxs_data.F90
@@ -261,6 +261,7 @@ contains
             enable_leg_mu = .true.
           elseif (temp_str == 'false' .or. temp_str == '0') then
             enable_leg_mu = .false.
+            this % legendre_mu_points = 1
           else
             call fatal_error("Unrecognized tabular_legendre/enable: " // temp_str)
           end if