diff --git a/src/input_xml.F90 b/src/input_xml.F90
index 9fefbbfcdc..6f1080b8af 100644
--- a/src/input_xml.F90
+++ b/src/input_xml.F90
@@ -179,8 +179,10 @@ contains
 
     ! After reading input and basic geometry setup is complete, build lists of
     ! neighboring cells for efficient tracking
-    call neighbor_lists()
-
+    if (.not. dagmc) then
+      call neighbor_lists()
+   end if
+   
     ! Assign temperatures to cells that don't have temperatures already assigned
     call assign_temperatures()