diff --git a/marchenko/demo/twoD/README b/marchenko/demo/twoD/README
index 91f17f5080deeabd9c19742b0995e51c96b6f5a8..69dc3d9765010979ac2ab4cb1ce26a1c60182042 100644
--- a/marchenko/demo/twoD/README
+++ b/marchenko/demo/twoD/README
@@ -7,5 +7,5 @@ Description of files:
 4) initialFocus.scr model G_d the intitial focusing function => iniFocus_z1100_x0_rp.su
 5) referenceShot.scr creates the reference Green's function at focal point => referenceP_rp.su
 6) marchenko.scr perform the Marchenko scheme
-7) primaries.scr computes the primaries only from a selected shot record.
+7) primaries.scr computes the primaries only from a selected shot record. => pred_rr.su
 
diff --git a/marchenko/demo/twoD/primaries.scr b/marchenko/demo/twoD/primaries.scr
index df8d79f795d9be175bbc633fa0477068958babe3..7ec27e0c712832d720e734493f8cbc397f73a645 100755
--- a/marchenko/demo/twoD/primaries.scr
+++ b/marchenko/demo/twoD/primaries.scr
@@ -19,7 +19,7 @@ suwind key=fldr min=$select max=$select < shots/refl_rp.su > shotsx0.su
 fconv file_in1=shotsx0.su file_in2=wave.su file_out=shotw.su
 
 marchenko_primaries file_shot=shots/refl_rp.su ishot=$select file_src=wave.su \
-	nshots=601 verbose=2 istart=40 iend=1024 fmax=90 \
+	nshots=601 verbose=2 istart=40 iend=650 fmax=90 \
 	niter=22 niterskip=50 shift=20 file_rr=pred_rr.su T=0
 
 #alternative use shotw as input, must first be multiplied by -1 (see theory)
@@ -36,7 +36,7 @@ exit
 (suwind key=offset min=0 max=0 < pred_rr.su ; suwind key=offset min=0 max=0 < shotw.su) | suxgraph
 
 sudiff pred_rr.su shotw.su > diff.su
-suximage < shotw.su  x1end=2 clip=1 title="original shot"&
-suximage < pred_rr.su  x1end=2 clip=1 title="shot with multiples removed"&
-suximage < diff.su   x1end=2 clip=1 title="removed multiples"&
+suximage < shotw.su  x1end=2.5 clip=1 title="original shot"&
+suximage < pred_rr.su  x1end=2.5 clip=1 title="shot with multiples removed"&
+suximage < diff.su   x1end=2.5 clip=1 title="removed multiples"&