Weird notices in phpBB 2.0.11

[Anthony DeRobertis <anthony@derobert.net>]

From the 2.0.10 -> 11 patch:

+ /*
+
+ 	This code has been modified from its original form by psoTFX @ phpbb.com
+ 	Changes introduce the back-ported phpBB 2.2 visual confirmation code.
+
+ 	NOTE: Anyone using the modified code contained within this script 
MUST include
+ 	a relevant message such as this in usercp_register.php ... failure to 
do so
+ 	will affect a breach of Section 2a of the GPL and our copyright
+
+ 	png visual confirmation system : (c) phpBB Group, 2003 : All Rights 
Reserved
+
+ */
+

And GPL (2
 a) You must cause the modified files to carry prominent notices
    stating that you changed the files and the date of any change.

Ummm...., er, what?

[note: I haven't contacted the phpBB maintainer or upstream. ]