diff --git a/manual/tracy.tex b/manual/tracy.tex
index 6d897570..c5207aac 100644
--- a/manual/tracy.tex
+++ b/manual/tracy.tex
@@ -1582,7 +1582,7 @@ In this window you can set various trace-related options. The timeline view migh
 
 \begin{itemize}
 \item \emph{\faExpand{} Draw empty labels} -- By default threads that don't have anything to display at the current zoom level are hidden. Enabling this option will show them anyway.
-\item \emph{\faEye{} Draw GPU zones} -- Allows disabling display of OpenGL/Vulkan zones. The \emph{GPU zones} drop-down allows disabling individual GPU contexts and setting CPU/GPU drift offsets (see section~\ref{gpuprofiling} for more information).
+\item \emph{\faEye{} Draw GPU zones} -- Allows disabling display of OpenGL/Vulkan zones. The \emph{GPU zones} drop-down allows disabling individual GPU contexts and setting CPU/GPU drift offsets (see section~\ref{gpuprofiling} for more information). The \emph{\faRobot~Auto} button automatically measures the GPU drift value\footnote{There is an assumption that drift is linear. Automated measurement calculates and removes change over time in delay-to-execution of GPU zones. Resulting value may still be incorrect.}.
 \item \emph{\faMicrochip{} Draw CPU zones} -- Determines whether CPU zones are displayed. The \emph{Namespaces} drop-down controls the display behavior of long zone names:
 \begin{itemize}
 \item \emph{Full} -- Zone names are always fully displayed (e.g.\ \texttt{std::sort}).