diff --git a/bin/tests/system/autosign/tests.sh b/bin/tests/system/autosign/tests.sh
index 0ace602de0..67ff40fa6f 100644
--- a/bin/tests/system/autosign/tests.sh
+++ b/bin/tests/system/autosign/tests.sh
@@ -14,7 +14,7 @@
 # OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 # PERFORMANCE OF THIS SOFTWARE.
 
-# $Id: tests.sh,v 1.23 2011/05/01 21:36:33 marka Exp $
+# $Id: tests.sh,v 1.24 2011/05/02 01:35:04 marka Exp $
 
 SYSTEMTESTTOP=..
 . $SYSTEMTESTTOP/conf.sh
@@ -896,10 +896,10 @@ check_interval () {
 	sed 's/\.//g' |
             awk -F: '
                      {
-                       if ($6 == 0)
-                         $6 = 25;
                        x = ($6+ $5*60000 + $4*3600000) - ($3+ $2*60000 + $1*3600000);
 		       x = x/1000;
+		       if (x < 0)
+			 x = x + 24*3600;
                        if (x != int(x))
                          x = int(x + 1);
                        if (x > interval)