method bracketExplode when tablename contains "Join"

Hello,
I'm using Symfony 1.4.1 with Doctrine (I imagine that the doctrine's version is 1.2.1), and I have a strange behavior because my table name is "piece_jointe", so it contains "JOIN" keyword inside.
In Doctrine_Query_Tokenizer class, the method bracketExplode explode string with a regular expression "#(JOIN)#i", so the table name is exploded and nothing works after that.

do you think it's possible to write a better regular expression to avoid this behavior ? Maybe add spaces after JOIN : "#(JOIN )#i but if there is a line break... or "#(JOIN[\s \n])#i"
For now, I'll rename the table !

Thanks a lot,
best regards
Etienne