diff --git a/HEN_HOUSE/user_codes/edknrc/edknrc.mortran b/HEN_HOUSE/user_codes/edknrc/edknrc.mortran
index 5a7dc4546..4383ad034 100644
--- a/HEN_HOUSE/user_codes/edknrc/edknrc.mortran
+++ b/HEN_HOUSE/user_codes/edknrc/edknrc.mortran
@@ -699,7 +699,7 @@ REPLACE {$VERSION} WITH {,' ',};
 REPLACE {$ONE-EPS} WITH {0.9999} "USED TO KEEP THE BEAM INSIDE THE TARGET"
 REPLACE {$NSWTCH} WITH     {8}   "# OF NRC SWITCHES FOR CONTROLLING SCATTERING"
 REPLACE {$MXMED} WITH      {3}    "MAX # OF MEDIA"
-REPLACE {$MXREG} WITH      {1153}"#REGIONS, $MAXRADII*$MAXCDOSE+1(VAC)"
+REPLACE {$MXREG} WITH      {3121}"#REGIONS, $MAXRADII*$MAXCDOSE+1(VAC)"
 REPLACE {$MXSTACK} WITH    {100}"MAXIMUM STACK"
 REPLACE {$MAXCDOSE} WITH   {48} "MAX # OF DOSE SCORING CONICAL ZONES"
 REPLACE {$MAXCANGLE} WITH  {48} "MAX # OF CONICAL BOUNDARIES (includes 180o )"