diff --git a/tests/su/11_su_sulog_failure/su.test b/tests/su/11_su_sulog_failure/su.test
index db105ab0..9ca17696 100755
--- a/tests/su/11_su_sulog_failure/su.test
+++ b/tests/su/11_su_sulog_failure/su.test
@@ -25,12 +25,15 @@ change_config
 
 echo -n "Check /var/log/sulog..."
 wc -l /var/log/sulog > tmp/sulog
-d=$(date +"SU %m/%d %H:%M")
+d1=$(date +"SU %m/%d %H:%M")
+d2=$(date -d"1 minute ago" +"SU %m/%d %H:%M")
 cat /var/log/sulog | \
-    egrep -v "$d \+ /dev/pts/[0-9]* root-testsuite" | \
-    egrep -v "$d - /dev/pts/[0-9]* testsuite-myuser" \
+    egrep -v "$d1 \+ /dev/pts/[0-9]* root-testsuite"  | \
+    egrep -v "$d2 \+ /dev/pts/[0-9]* root-testsuite"  | \
+    egrep -v "$d1 - /dev/pts/[0-9]* testsuite-myuser" | \
+    egrep -v "$d2 - /dev/pts/[0-9]* testsuite-myuser" \
         >> tmp/sulog || true
-diff -au tmp/sulog data/sulog
+diff -au data/sulog tmp/sulog
 echo "OK"
 rm -f tmp/sulog