TEXT field update problem

This is probably a simple problem for most of you, but I'm pulling my hair out and it's an endangered species as it is.
I have a mysql one table database with 6 fields that I'm using with php.
id_ohg - auto-increment, id field
PCode - varchar
Name - varchar
Desc - TEXT
CP - decimal
SP - decimal

My problem is updating the TEXT field (Desc).
I get a mysqlerrno of 1064 (you have an error near...)
with this sql statement:
$query = "UPDATE ohg set PCode = '$pcode', Desc = '$pdesc', Name = '$pname', CP = '$CP', SP = '$SP' where id_ohg = '$id_ohg' LIMIT 1";

this sql statement works perfectly:
$query = "UPDATE ohg set PCode = '$pcode', Name = '$pname', CP = '$CP', SP = '$SP' where id_ohg = '$id_ohg' LIMIT 1";

As you can see, the only difference is the Desc field and value.

Any thoughts?

many thanks.
Jeff

Isn't DESC a reserved word?
It may not like you using that as a fieldname.

Aha! That's it. (he said red-faced)
Thanks for your help!