diff --git a/net/server/internal/api_addArticle.go b/net/server/internal/api_addArticle.go
index eb2d69b9..95e13aa7 100644
--- a/net/server/internal/api_addArticle.go
+++ b/net/server/internal/api_addArticle.go
@@ -29,11 +29,17 @@ func AddArticle(w http.ResponseWriter, r *http.Request) {
     return
   }
 
-  var labels []store.Label
-  if err := store.DB.Where("label_id IN ?", articleAccess.Labels).Find(&labels).Error; err != nil {
+  var labelSlots []store.LabelSlot
+  if err := store.DB.Preload("Label").Where("label_slot_id IN ?", articleAccess.Labels).Find(&labelSlots).Error; err != nil {
     ErrResponse(w, http.StatusInternalServerError, err)
     return
   }
+  var labels []store.Label
+  for _, slot := range labelSlots {
+    if slot.Label != nil {
+      labels = append(labels, *slot.Label)
+    }
+  }
 
   // save data and apply transaction
   var slot *store.ArticleSlot
diff --git a/net/server/internal/api_removeArticle.go b/net/server/internal/api_removeArticle.go
index d6b5b585..526f5c22 100644
--- a/net/server/internal/api_removeArticle.go
+++ b/net/server/internal/api_removeArticle.go
@@ -31,11 +31,12 @@ func RemoveArticle(w http.ResponseWriter, r *http.Request) {
       return res
     }
     slot.ArticleID = 0
+    slot.Revision = account.ContentRevision + 1
     slot.Article = nil
     if res := tx.Save(&slot).Error; res != nil {
       return res
     }
-    if res := tx.Model(&account).Update("content_revision", account.ContentRevision).Error; res != nil {
+    if res := tx.Model(&account).Update("content_revision", account.ContentRevision + 1).Error; res != nil {
       return res
     }
     return nil
diff --git a/net/server/internal/modelUtil.go b/net/server/internal/modelUtil.go
index 800ecef1..c22f1264 100644
--- a/net/server/internal/modelUtil.go
+++ b/net/server/internal/modelUtil.go
@@ -71,7 +71,7 @@ func getArticleModel(slot *store.ArticleSlot, contact bool, shared bool) *Articl
 
   var labels []string;
   for _, label := range slot.Article.Labels {
-    labels = append(labels, label.LabelId)
+    labels = append(labels, label.LabelSlot.LabelSlotId)
   }
 
   return &Article{
diff --git a/net/server/internal/store/schema.go b/net/server/internal/store/schema.go
index a0c82c2a..15c01293 100644
--- a/net/server/internal/store/schema.go
+++ b/net/server/internal/store/schema.go
@@ -9,6 +9,8 @@ func AutoMigrate(db *gorm.DB) {
   db.AutoMigrate(&Account{});
   db.AutoMigrate(&AccountToken{});
   db.AutoMigrate(&Group{});
+  db.AutoMigrate(&LabelSlot{});
+  db.AutoMigrate(&LabelData{});
   db.AutoMigrate(&Label{});
   db.AutoMigrate(&CardSlot{});
   db.AutoMigrate(&Card{});
@@ -117,18 +119,25 @@ type GroupData struct {
   Data              string
 }
 
+type LabelSlot struct {
+  ID                uint
+  LabelSlotId       string          `gorm:"not null;index:labelslot,unique"`
+  AccountID         uint            `gorm:"not null;index:labelslot,unique"`
+  Revision          int64           `gorm:"not null"`
+  LabelID           uint            `gorm:"not null;default:0"`
+  Label             *Label
+  Account           Account
+}
+
 type Label struct {
   ID                uint            `gorm:"primaryKey;not null;unique;autoIncrement"`
-  LabelId           string          `gorm:"not null;index:label,unique"`
-  AccountID         uint            `gorm:"not null;index:label,unique"`
   LabelDataID       uint            `gorm:"not null;index:labeldata"`
-  Revision          int64           `gorm:"not null"`
   DataType          string          `gorm:"index"`
   Created           int64           `gorm:"autoCreateTime"`
   Updated           int64           `gorm:"autoUpdateTime"`
   Groups            []Group         `gorm:"many2many:label_groups;"`
-  Account           Account
   LabelData         LabelData
+  LabelSlot         LabelSlot
 }
 
 type LabelData struct {