StringIndexOutOfBoundsException in GBFFilter ~ line 115

I'm not able to replicate and have lost the stack trace, but here's the cause of it, and the fix should be easy. Not sure why I can't replicate though:

Exception: String index out of range: 8

so if 'remains' is of length 8, ltpos = 7 => StringIndexOutOfBoundsException

Code:
if (ltpos >= 0
&& ltpos < remains.length()
&& Character.isUpperCase(remains.charAt(ltpos + 1)))

{ DataPolice.report("Possible bad GBF tag" + remains); //$NON-NLS-1$ }

Is the easy fix just to ensure that ltpost < remains.length() - 1
Or is more complicated than that?