diff --git a/Documentation/UserManual/manual.tex b/Documentation/UserManual/manual.tex
index 7812251..ca5f638 100644
--- a/Documentation/UserManual/manual.tex
+++ b/Documentation/UserManual/manual.tex
@@ -193,7 +193,7 @@ Input jack for external DC power (\SI{5}{\volt}, \SI{1.5}{\ampere}, positive cen
 \subsection{RF ports}
 RF connector to connect the DUT. Both ports are identical and the device architecture supports full S-Parameter measurements (S11, S21, S12 and S22).
 \begin{important}
-The RF ports have no input protection, do not apply a signal with more than +\SI{10}{\dBm} of power.
+The RF ports have no input protection, so do not apply a signal with more than +\SI{10}{\dBm} of power.
 \end{important}
 \subsection{LEDs}
 Ten LEDs indicate the status: