Tweak.

README.md

@@ -179,7 +179,7 @@ Source code tips
   data block in SETUP.EXE so it knows it's in "single EXE" form.
 
 - For compiler debugging purposes define ``STATICCOMPILER`` in CompForm.pas
-  and ``STATICPREPROC`` in Compile.pas.
+  and for preprocessor debugging also ``STATICPREPROC`` in Compile.pas.
 
 - To debug the uninstaller first run Setup.exe to completion with the
   ``/DETACHEDMSG`` command line parameter set. Afterwards copy uninst000.dat and