diff --git a/test/units/end.sh b/test/units/end.sh
index 4c6c0afa0e..5e2943758a 100755
--- a/test/units/end.sh
+++ b/test/units/end.sh
@@ -9,5 +9,9 @@ set -o pipefail
 # 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)
 
+# 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)
+
 systemctl poweroff --no-block
 exit 0