diff --git a/doc/xschem_man/tutorial_ngspice_backannotation.html b/doc/xschem_man/tutorial_ngspice_backannotation.html
index e59b4cf1..a1699086 100644
--- a/doc/xschem_man/tutorial_ngspice_backannotation.html
+++ b/doc/xschem_man/tutorial_ngspice_backannotation.html
@@ -155,7 +155,7 @@ write cmos_example.raw
  <p>
   Run again the simulation and the <kbd>ngspice::annotate</kbd> command and values will be updated.
  </p>
- <img src="backannotation10.svg">
+ <img  style="box-shadow:none;" src="backannotation10.svg">
  <p>
   You can add additional variables in the raw file , for example modifying the .save instruction:<br>
   <kbd>.save all @m4[gm] @m5[gm] @m1[gm]</kbd>