diff --git a/Documentation/UserManual/manual.tex b/Documentation/UserManual/manual.tex
index e91b8b7..45c1acf 100644
--- a/Documentation/UserManual/manual.tex
+++ b/Documentation/UserManual/manual.tex
@@ -1238,7 +1238,7 @@ This marker type is only available for through measurements.
 \subsubsection{TOI/IP3}
 \screenshot{1.0}{MarkerTOIGraph.png}
 \screenshot{1.0}{MarkerTOITable.png}
-This marker type calculated the third-order intercept point. It is only available in spectrum analyzer mode. Initially a peak search is executed to find the two highest peaks. The frequencies of the intermodulation products are calculated from these peak frequencies and helper markers placed on each of these frequencies. Finally, the third-order intercept point as well as the tone and distortion signal amplitudes are calculated.
+This marker type calculates the third-order intercept point. It is only available in spectrum analyzer mode. Initially a peak search is executed to find the two highest peaks. The frequencies of the intermodulation products are calculated from these peak frequencies and helper markers placed on each of these frequencies. Finally, the third-order intercept point as well as the tone and distortion signal amplitudes are calculated.
 \subsubsection{Phase noise}
 \screenshot{1.0}{MarkerPhasenoiseGraph.png}
 \screenshot{1.0}{MarkerPhasenoiseTable.png}