diff --git a/manual/tracy.tex b/manual/tracy.tex
index dd88c39d..beebd780 100644
--- a/manual/tracy.tex
+++ b/manual/tracy.tex
@@ -1157,7 +1157,7 @@ Mutual exclusion zones are displayed in each thread that tries to acquire them.
 \item \emph{Red region} -- The thread wants to acquire the lock, but is blocked by other thread, or threads in case of shared lock.
 \end{itemize}
 
-Hovering the \faMousePointer{}~mouse pointer over a lock event will display important information, for example a list of threads that are currently blocking, or which are blocked by the lock. Clicking the \LMB{}~left mouse button on a lock event or a lock label will open the lock information window, as described in section~\ref{lockwindow}. Clicking the \MMB{}~middle mouse button on a lock event will zoom the view to the extent of the event.
+Hovering the \faMousePointer{}~mouse pointer over a lock timeline will highlight the lock in all threads to help reading the lock behavior. Hovering the \faMousePointer{}~mouse pointer over a lock event will display important information, for example a list of threads that are currently blocking, or which are blocked by the lock. Clicking the \LMB{}~left mouse button on a lock event or a lock label will open the lock information window, as described in section~\ref{lockwindow}. Clicking the \MMB{}~middle mouse button on a lock event will zoom the view to the extent of the event.
 
 \subparagraph{Plots}