diff --git a/manual/tracy.tex b/manual/tracy.tex
index 59c919c9..d349e577 100644
--- a/manual/tracy.tex
+++ b/manual/tracy.tex
@@ -1869,6 +1869,14 @@ The frame time graph (section~\ref{frametimegraph}) behavior is altered when a z
 
 Each bar is drawn in gray color, with the white part accounting for the zone time. If the execution time is greater than the frame time (this is possible if more than one thread was executing the same zone), the overflow will be displayed using red color.
 
+\begin{bclogo}[
+noborder=true,
+couleur=black!5,
+logo=\bcattention
+]{Caveats}
+The displayed data might not be calculated correctly and some zones may not be included in the reported times.
+\end{bclogo}
+
 \subsection{Compare traces window}
 \label{compare}