diff --git a/models/issue_comment.go b/models/issue_comment.go
index a17be97e7..bab002fca 100644
--- a/models/issue_comment.go
+++ b/models/issue_comment.go
@@ -462,7 +462,9 @@ func DeleteComment(comment *Comment) error {
 		return err
 	}
 
-	if _, err := sess.Id(comment.ID).Delete(new(Comment)); err != nil {
+	if _, err := sess.Delete(&Comment{
+		ID: comment.ID,
+	}); err != nil {
 		return err
 	}
 
diff --git a/vendor/github.com/go-xorm/xorm/engine.go b/vendor/github.com/go-xorm/xorm/engine.go
index 1ee1589c3..7bd0df6e8 100644
--- a/vendor/github.com/go-xorm/xorm/engine.go
+++ b/vendor/github.com/go-xorm/xorm/engine.go
@@ -573,7 +573,7 @@ func (engine *Engine) Id(id interface{}) *Session {
 	return session.Id(id)
 }
 
-// ID mehtod provoide a condition as (id) = ?
+// ID method provoide a condition as (id) = ?
 func (engine *Engine) ID(id interface{}) *Session {
 	session := engine.NewSession()
 	session.IsAutoClose = true
@@ -1599,6 +1599,8 @@ func (engine *Engine) formatTime(tz *time.Location, sqlTypeName string, t time.T
 		return t
 	}
 	if tz != nil {
+		t = t.In(tz)
+	} else {
 		t = engine.TZTime(t)
 	}
 	switch sqlTypeName {
diff --git a/vendor/github.com/go-xorm/xorm/session_delete.go b/vendor/github.com/go-xorm/xorm/session_delete.go
index 8c9193c20..1c458fe1e 100644
--- a/vendor/github.com/go-xorm/xorm/session_delete.go
+++ b/vendor/github.com/go-xorm/xorm/session_delete.go
@@ -226,7 +226,7 @@ func (session *Session) Delete(bean interface{}) (int64, error) {
 				session.afterDeleteBeans[bean] = &afterClosures
 			}
 		} else {
-			if _, ok := interface{}(bean).(AfterInsertProcessor); ok {
+			if _, ok := interface{}(bean).(AfterDeleteProcessor); ok {
 				session.afterDeleteBeans[bean] = nil
 			}
 		}
diff --git a/vendor/github.com/go-xorm/xorm/session_update.go b/vendor/github.com/go-xorm/xorm/session_update.go
index 17e5672ed..27e2deb0f 100644
--- a/vendor/github.com/go-xorm/xorm/session_update.go
+++ b/vendor/github.com/go-xorm/xorm/session_update.go
@@ -333,7 +333,7 @@ func (session *Session) Update(bean interface{}, condiBean ...interface{}) (int6
 			}
 
 		} else {
-			if _, ok := interface{}(bean).(AfterInsertProcessor); ok {
+			if _, ok := interface{}(bean).(AfterUpdateProcessor); ok {
 				session.afterUpdateBeans[bean] = nil
 			}
 		}
diff --git a/vendor/vendor.json b/vendor/vendor.json
index 778edbd0b..05e01d6e0 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -455,10 +455,10 @@
 			"revisionTime": "2016-08-11T02:11:45Z"
 		},
 		{
-			"checksumSHA1": "V3Sy7+JY2PVw3EkfajS4DxCDBg8=",
+			"checksumSHA1": "pbmrxOvDzdm40iRgnsS25Ig+33o=",
 			"path": "github.com/go-xorm/xorm",
-			"revision": "57bcb65078410bcd5c7c8ee52d7494e7b5146a04",
-			"revisionTime": "2017-01-22T09:17:55Z"
+			"revision": "445a934d32ed0934aedf0ef99b4b7c69b22f8e58",
+			"revisionTime": "2017-01-25T11:54:21Z"
 		},
 		{
 			"checksumSHA1": "1ft/4j5MFa7C9dPI9whL03HSUzk=",