diff --git a/test/units/post.sh b/test/units/post.sh
index 9fd50fffaa..55d8ff3ae3 100755
--- a/test/units/post.sh
+++ b/test/units/post.sh
@@ -3,11 +3,11 @@
 set -eux
 set -o pipefail
 
-(! journalctl -q -o short-monotonic --grep "didn't pass validation" | grep -v "test-varlink-idl" >>/failed)
+(! journalctl -q -o short-monotonic --grep "didn't pass validation" | grep -v "test-varlink-idl")
 
 # Here, the redundant '[ ]' in the pattern is required in order not to match the logged command itself.
-(! journalctl -q -o short-monotonic --grep 'Warning: cannot close sd-bus connection[ ].*after fork' >>/failed)
+(! journalctl -q -o short-monotonic --grep 'Warning: cannot close sd-bus connection[ ].*after fork')
 
 # Check if sd-executor doesn't complain about not being able to (de)serialize stuff
-(! journalctl -q -o short-monotonic --grep "[F]ailed to parse serialized line" >>/failed)
-(! journalctl -q -o short-monotonic --grep "[F]ailed to (de)?serialize \w+" >>/failed)
+(! journalctl -q -o short-monotonic --grep "[F]ailed to parse serialized line")
+(! journalctl -q -o short-monotonic --grep "[F]ailed to (de)?serialize \w+")