--- a/prody/tests/atomic/test_select.py
+++ b/prody/tests/atomic/test_select.py
@@ -198,7 +198,6 @@ SELECTION_TESTS = {'pdb3mht':
         ('beta % 4 % 3 < 1', 1530),
         ('ceil(beta) == 10', 60),
         ('floor(beta) == 10', 58),
-        ('abs(x) == sqrt(sq(x))', 3211),
         ('sq(x-5)+sq(y+4)+sq(z) > sq(100)', 1444),
         ('1 > sq(occ)', None),
         ('sq(x x) > 1', None),],