diff --git a/Documentation/UserManual/manual.tex b/Documentation/UserManual/manual.tex
index 135bcb6..24ccdaf 100644
--- a/Documentation/UserManual/manual.tex
+++ b/Documentation/UserManual/manual.tex
@@ -1460,7 +1460,7 @@ These are the necessary steps:
 \item \textbf{Perform the calibration:} For each frequency and port, select the corresponding cell in the table. The \vna{} will generate a signal at the selected frequency, on the selected port, at (what it thinks is) \SI{-20}{\dBm}. Use your external equipment to determine the actual output level and enter it into the selected cell.
 \item \textbf{Save the calibration:} Once all measurements have been taken, the "Save to Device" button becomes available. There is no way to save intermediate results, you have to calibrate all frequencies you have chosen in step 1.
 \end{enumerate}
-If the Receiver Calibration is already done, it is also possible to infer the Source Calibration from that. Press \keys{Automatic measurement} and connect both ports of the \vna{} directly to each other. This connection should be as ideal as possible (short, low loss cable) as every imperfection directly translates into calibration errors. During the automatic calibration, the \vna{} uses the already established frequency points from the Receiver Calibration and measures the output amplitude by itself to determine the coefficients of the Source Calibration.
+If you've already done a Receiver Calibration, it's possible to infer the Source Calibration from it. Press \keys{Automatic measurement} and connect both ports of the \vna{} directly to each other. This connection should be as ideal as possible (short, low loss cable) as every imperfection directly translates into calibration errors. During the automatic calibration, the \vna{} uses the already established frequency points from the Receiver Calibration and measures the output amplitude by itself to determine the coefficients of the Source Calibration.
 \subsection{Receiver Calibration}
 Select \menu[,]{Device,Receiver Calibration}. The Receiver Calibration works almost identically to the Source Calibration. The only difference is in step 3:
 \begin{enumerate}