diff --git a/manual/tracy.tex b/manual/tracy.tex
index c13d4250..007d8fab 100644
--- a/manual/tracy.tex
+++ b/manual/tracy.tex
@@ -804,6 +804,8 @@ Suppose for some reason you want to use another port\footnote{For example, other
 
 If a custom port is not specified and the default listening port is already occupied, the profiler will automatically try to listen on a number of other ports.
 
+Since the port in use may differ from the default one, the client application may query the actual data connection port using the \texttt{TracyPort} macro. It returns the port number once the listening socket has been bound, or zero otherwise.
+
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