diff --git a/tests/su/11_su_sulog_failure/su.test b/tests/su/11_su_sulog_failure/su.test
index e66da9c6..db105ab0 100755
--- a/tests/su/11_su_sulog_failure/su.test
+++ b/tests/su/11_su_sulog_failure/su.test
@@ -21,15 +21,14 @@ trap 'log_status "$0" "FAILURE"; restore_config' 0
 
 change_config
 
-./run_su.exp myuser myuserF00barbaz-wrong '$ '
+./run_su.exp myuser myuserF00barbaz '$ '
 
-#date +"SU %m/%d %H:%M + $(tty) root-testsuite"    > tmp/sulog
-#date +"SU %m/%d %H:%M + $(tty) testsuite-myuser" >> tmp/sulog
 echo -n "Check /var/log/sulog..."
 wc -l /var/log/sulog > tmp/sulog
+d=$(date +"SU %m/%d %H:%M")
 cat /var/log/sulog | \
-    egrep -v "$(date +"SU %m/%d %H:%M \+ /dev/pts/[0-9]* root-testsuite")" | \
-    egrep -v "$(date +"SU %m/%d %H:%M - /dev/pts/[0-9]* testsuite-myuser")" \
+    egrep -v "$d \+ /dev/pts/[0-9]* root-testsuite" | \
+    egrep -v "$d - /dev/pts/[0-9]* testsuite-myuser" \
         >> tmp/sulog || true
 diff -au tmp/sulog data/sulog
 echo "OK"