diff --git a/module/repo/model.php b/module/repo/model.php
index c726c22366..6a7e8ab2fe 100644
--- a/module/repo/model.php
+++ b/module/repo/model.php
@@ -444,7 +444,7 @@ class repoModel extends model
                 ->leftJoin(TABLE_REPOBRANCH)->alias('t3')->on('t2.id=t3.revision')
                 ->where('1=1')
                 ->andWhere('t1.repo')->eq($repo->id)
-                ->andWhere('t2.`time`')->le($revisionTime)
+                ->beginIF($revisionTime)->andWhere('t2.`time`')->le($revisionTime)->fi()
                 ->andWhere('left(t2.comment, 12)')->ne('Merge branch')
                 ->beginIF($repo->SCM != 'Subversion' and $this->cookie->repoBranch)->andWhere('t3.branch')->eq($this->cookie->repoBranch)->fi()
                 ->beginIF($type == 'dir')
@@ -461,7 +461,7 @@ class repoModel extends model
         $comments = $this->dao->select('DISTINCT t1.*')->from(TABLE_REPOHISTORY)->alias('t1')
             ->leftJoin(TABLE_REPOBRANCH)->alias('t2')->on('t1.id=t2.revision')
             ->where('t1.repo')->eq($repoID)
-            ->andWhere('t1.`time`')->le($revisionTime)
+            ->beginIF($revisionTime)->andWhere('t1.`time`')->le($revisionTime)->fi()
             ->andWhere('left(t1.comment, 12)')->ne('Merge branch')
             ->beginIF($repo->SCM != 'Subversion' and $this->cookie->repoBranch)->andWhere('t2.branch')->eq($this->cookie->repoBranch)->fi()
             ->beginIF($entry != '/' and !empty($entry))->andWhere('t1.id')->in($historyIdList)->fi()