diff --git a/pkg/models/list.go b/pkg/models/list.go
index 97bcdc92b7..6ae7e6cef6 100644
--- a/pkg/models/list.go
+++ b/pkg/models/list.go
@@ -10,7 +10,7 @@ type List struct {
 	OwnerID     int64  `xorm:"int(11) INDEX" json:"-"`
 	NamespaceID int64  `xorm:"int(11) INDEX" json:"-" param:"namespace"`
 
-	Owner User        `xorm:"-" json:"owner"`
+	Owner User        `xorm:"-" json:"owner" valid:"-"`
 	Tasks []*ListTask `xorm:"-" json:"tasks"`
 
 	Created int64 `xorm:"created" json:"created"`
diff --git a/pkg/models/list_tasks.go b/pkg/models/list_tasks.go
index 85bf08c9c1..07e2852a40 100644
--- a/pkg/models/list_tasks.go
+++ b/pkg/models/list_tasks.go
@@ -14,7 +14,7 @@ type ListTask struct {
 	Created int64 `xorm:"created" json:"created"`
 	Updated int64 `xorm:"updated" json:"updated"`
 
-	CreatedBy User `xorm:"-" json:"createdBy"`
+	CreatedBy User `xorm:"-" json:"createdBy" valid:"-"`
 
 	CRUDable `xorm:"-" json:"-"`
 	Rights   `xorm:"-" json:"-"`
diff --git a/pkg/models/list_tasks_create_update.go b/pkg/models/list_tasks_create_update.go
index 810aef7af7..7f6b8de94e 100644
--- a/pkg/models/list_tasks_create_update.go
+++ b/pkg/models/list_tasks_create_update.go
@@ -76,7 +76,7 @@ func (i *ListTask) Update() (err error) {
 		ot.Done = false
 	}
 
-	_, err = x.ID(i.ID).Cols("text", "description", "done", "due_date_unix", "reminder_unix").Update(ot)
+	_, err = x.ID(i.ID).Cols("text", "description", "done", "due_date_unix", "reminders_unix").Update(ot)
 	*i = ot
 	return
 }
diff --git a/pkg/models/namespace.go b/pkg/models/namespace.go
index debec602ed..95d1f21a53 100644
--- a/pkg/models/namespace.go
+++ b/pkg/models/namespace.go
@@ -9,7 +9,7 @@ type Namespace struct {
 	Description string `xorm:"varchar(1000)" json:"description" valid:"runelength(0|250)"`
 	OwnerID     int64  `xorm:"int(11) not null INDEX" json:"-"`
 
-	Owner User `xorm:"-" json:"owner"`
+	Owner User `xorm:"-" json:"owner" valid:"-"`
 
 	Created int64 `xorm:"created" json:"created"`
 	Updated int64 `xorm:"updated" json:"updated"`
diff --git a/pkg/models/user.go b/pkg/models/user.go
index 5bd31e09bc..9f13d983da 100644
--- a/pkg/models/user.go
+++ b/pkg/models/user.go
@@ -15,7 +15,7 @@ type UserLogin struct {
 // User holds information about an user
 type User struct {
 	ID       int64  `xorm:"int(11) autoincr not null unique pk" json:"id"`
-	Username string `xorm:"varchar(250) not null unique" json:"username" valid:"length(5|250)"`
+	Username string `xorm:"varchar(250) not null unique" json:"username" valid:"length(3|250)"`
 	Password string `xorm:"varchar(250) not null" json:"-"`
 	Email    string `xorm:"varchar(250)" json:"email" valid:"email,length(0|250)"`
 	IsActive bool   `json:"-"`