diff --git a/integrations/session_insert_test.go b/integrations/session_insert_test.go
index 38743365..a023ab72 100644
--- a/integrations/session_insert_test.go
+++ b/integrations/session_insert_test.go
@@ -1032,7 +1032,9 @@ func TestInsertDeleted(t *testing.T) {
 		ID        uint64    `xorm:"'ID' pk autoincr"`
 		DeletedAt time.Time `xorm:"'DELETED_AT' deleted notnull"`
 	}
-	assert.Error(t, testEngine.Sync2(new(InsertDeletedStructNotRight)))
+	// notnull tag will be ignored
+	err := testEngine.Sync2(new(InsertDeletedStructNotRight))
+	assert.NoError(t, err)
 
 	type InsertDeletedStruct struct {
 		ID        uint64    `xorm:"'ID' pk autoincr"`
@@ -1042,7 +1044,7 @@ func TestInsertDeleted(t *testing.T) {
 	assert.NoError(t, testEngine.Sync2(new(InsertDeletedStruct)))
 
 	var v InsertDeletedStruct
-	_, err := testEngine.Insert(&v)
+	_, err = testEngine.Insert(&v)
 	assert.NoError(t, err)
 
 	var v2 InsertDeletedStruct
diff --git a/tags/parser.go b/tags/parser.go
index ffff74a2..b793a8f1 100644
--- a/tags/parser.go
+++ b/tags/parser.go
@@ -298,8 +298,8 @@ func (parser *Parser) Parse(v reflect.Value) (*schemas.Table, error) {
 
 	deletedColumn := table.DeletedColumn()
 	// check columns
-	if deletedColumn != nil && !deletedColumn.Nullable {
-		return nil, errors.New("deleted column should be allowed null")
+	if deletedColumn != nil {
+		deletedColumn.Nullable = true
 	}
 
 	return table, nil
diff --git a/tags/tag.go b/tags/tag.go
index 4a39ba54..641b8c52 100644
--- a/tags/tag.go
+++ b/tags/tag.go
@@ -238,6 +238,7 @@ func UpdatedTagHandler(ctx *Context) error {
 // DeletedTagHandler describes deleted tag handler
 func DeletedTagHandler(ctx *Context) error {
 	ctx.col.IsDeleted = true
+	ctx.col.Nullable = true
 	return nil
 }