Does this happen after you compile ? Well once the syntax is gone, it cannot brought back to original one, however you can stop such future mishaps from happening.
If you're using {$NOSOURCE} flag, remove it.
If you're creating thread with symbols in the name, then don't. Name your thread like this thread "cleo"
Open SB and press F10, under General tab, check "Add extra info to SCM" is ticked, if it is not, tick it and save it.