c3-lang/libtommath

diff --git a/doc/bn.tex b/doc/bn.tex
index 85f0607..ef8d141 100644
--- a/doc/bn.tex
+++ b/doc/bn.tex
@@ -185,7 +185,7 @@ NetBSD is not as strict as OpenBSD but still needs \texttt{gmake} to build the s
 pkg_add gmake libtool
 \end{alltt}
 Please check with \texttt{libtool --version} that installed libtool is indeed a GNU libtool.
-Build the shared library with:
+Build the shared library by typing:
 \begin{alltt}
 gmake -f makefile.shared
 \end{alltt}