diff --git a/e2-estia.i b/e2-estia.i
index 46a0cab..409f958 100644
--- a/e2-estia.i
+++ b/e2-estia.i
@@ -232,7 +232,7 @@ c * Source Term from Valentina for 2m adapted to size
 c read file=sources/e2_2m.i echo
 c read file=sources/e2_2m_mod.i echo
 c * Estimated source within bunker wall to optimize collimator efficiency
-c read file=sources/bunker_wall.i echo
+c read file=sources/bunker_wall.i echo $ approximate, not for official results
 c * McStas source terms for gamma doeses
 c read file=sources/mcstas_source_vs.i echo
 c read file=sources/mcstas_source_sample.i echo
diff --git a/sources/bunker_wall.i b/sources/bunker_wall.i
index 8ef78a2..aab100a 100644
--- a/sources/bunker_wall.i
+++ b/sources/bunker_wall.i
@@ -3,11 +3,11 @@ cut:n j 0
 c cut all photons that can't produce neutrons
 cut:p 1e+08 1.667
 c make sure to supply the correct WWINP file
-WWP:n  j j 4 j -1 j 1.0 1j 1.0E+8 1j
+WWP:n  j j 4 j -1 j 1.0 1j 1.0E+7 1j
 c the source definition with neutrons/s
 sdef    tr=103 pos=d1   vec=1 0 0 
         rad=fpos d2 dir=fpos d3 erg=fpos d4
-        par=n  ara=4.72e4 wgt=1.037e+8
+        par=n  ara=4.72e4 wgt=3.111e+7 $ from 1.037e+8 by 2m comparison
 c the pos variable is an index for the used distributions
 c it can be considered a constant and the values are just
 c indices in the direction/segment matrix