diff --git a/flask_appbuilder/security/forms.py b/flask_appbuilder/security/forms.py
index 2f1a8d3ebe..bb16c258ba 100644
--- a/flask_appbuilder/security/forms.py
+++ b/flask_appbuilder/security/forms.py
@@ -18,7 +18,7 @@ class SelectDataRequired(DataRequired):
     select fields
     """
 
-    field_flags = ()
+    field_flags = {}
 
 
 class LoginForm_oid(DynamicForm):
diff --git a/flask_appbuilder/validators.py b/flask_appbuilder/validators.py
index 6453611917..2c49fed625 100644
--- a/flask_appbuilder/validators.py
+++ b/flask_appbuilder/validators.py
@@ -26,7 +26,7 @@ class Unique:
     a specified table field.
     """
 
-    field_flags = ("unique",)
+    field_flags = {"unique": True}
 
     def __init__(
         self, datamodel: BaseInterface, col_name: str, message: Optional[str] = None