diff --git a/doc/user-manual/fpakc_UserManual.tex b/doc/user-manual/fpakc_UserManual.tex
index 469165c..7a17942 100644
--- a/doc/user-manual/fpakc_UserManual.tex
+++ b/doc/user-manual/fpakc_UserManual.tex
@@ -623,6 +623,9 @@ make
           \item \textbf{particles}. Array of characters.
             Size equal to the number of species.
             Each element of the array is the name of the \textbf{boundaries.particles} that the species will experience when interacting with the edge in this physical surface.
+          \item \textbf{EM}. Character.
+            Name of the model in \textbf{boundaries.EM}.
+            If none is provided, the default reflection boundary condition is applied.
         \end{itemize}
 
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