testsuite error in rtest16.mac



I get the following error in the testsuite:

Running tests in rtest16: 
********************** Problem 383 ***************
Input:
block([numer : true], is(abs(zeta(%i + 3)
                        - (1.10721440843141 - .1482908671781754 %i)) <
1.e-15))

Result:
false

This differed from the expected result:
true

390/391 tests passed


I get the following result for test:

(%i3) abs(zeta(%i+3)- (1.10721440843141 - .1482908671781754*%i)),numer;
(%o3) 3.3157171161039706e-9


This is my build info:

Maxima version: 5.20post
Maxima build date: 23:4 5/7/2010
Host type: i686-pc-linux-gnu
Lisp implementation type: SBCL
Lisp implementation version: 1.0.29.11.debian

Dieter Kaiser