diff --git a/api/graphql/models/album.go b/api/graphql/models/album.go
index 93b8187..7562548 100644
--- a/api/graphql/models/album.go
+++ b/api/graphql/models/album.go
@@ -17,7 +17,7 @@ type Album struct {
 	Owners   []User `gorm:"many2many:user_albums;constraint:OnDelete:CASCADE;"`
 	Path     string `gorm:"not null"`
 	PathHash string `gorm:"unique"`
-	CoverID  int    `gorm:"index;"`
+	CoverID  *int
 }
 
 func (a *Album) FilePath() string {
diff --git a/api/graphql/resolvers/album.go b/api/graphql/resolvers/album.go
index c97e501..8393626 100644
--- a/api/graphql/resolvers/album.go
+++ b/api/graphql/resolvers/album.go
@@ -152,7 +152,7 @@ func (r *albumResolver) Thumbnail(ctx context.Context, obj *models.Album) (*mode
 
 	fmt.Print(obj.CoverID)
 
-	if obj.CoverID == 0 {
+	if obj.CoverID == nil {
 		if err := r.Database.Raw(`
 			WITH recursive sub_albums AS (
 				SELECT * FROM albums AS root WHERE id = ?