diff --git a/manual/tracy.tex b/manual/tracy.tex
index 840b21b9..bfe548a3 100644
--- a/manual/tracy.tex
+++ b/manual/tracy.tex
@@ -346,7 +346,7 @@ Do note that all bug fixes and pull requests are made against the \texttt{master
 
 With the source code included in your project, add the \texttt{tracy/TracyClient.cpp} source file to the IDE project and/or makefile. You're done. Tracy is now integrated into the application.
 
-In the default configuration Tracy is disabled. This way you don't have to worry that the production builds will perform collection of profiling data. You will probably want to create a separate build configuration, with the \texttt{TRACY\_ENABLE} define, which enables profiling.
+In the default configuration Tracy is disabled. This way you don't have to worry that the production builds will perform collection of profiling data. You will probably want to create a separate build configuration, with the \texttt{TRACY\_ENABLE} define, which enables profiling. Be careful to enter the define name as specified, don't make a mistake of adding an additional \texttt{D} at the end. Also make sure that this macro is defined for all files across your project.
 
 The application you want to profile should be compiled with all the usual optimization options enabled (i.e.~make a release build). It makes no sense to profile debugging builds, as the unoptimized code and additional checks (asserts, etc.) completely change how the program behaves.