diff --git a/doc/user-manual/fpakc_UserManual.tex b/doc/user-manual/fpakc_UserManual.tex
index 114dccf..f4c522a 100644
--- a/doc/user-manual/fpakc_UserManual.tex
+++ b/doc/user-manual/fpakc_UserManual.tex
@@ -533,7 +533,6 @@ make
                    
                 \item \textbf{ionization}: Per each particle crossing the surface with this type of boundary, a number of ionization events are calculated.
                   A pair of ion-electron is generated for each ionization event, taking as a reference a neutral background.
-                  The secondary electron is taken as the same type as the incident particle.
                   The available input is:
                   
                   \textbf{neutral}: Object.