diff --git a/iranian_cities/constants.py b/iranian_cities/constants.py
index 8581873..7b9bfb0 100644
--- a/iranian_cities/constants.py
+++ b/iranian_cities/constants.py
@@ -2,8 +2,8 @@
 
 # Default values for permissions
 DEFAULT_SETTINGS: Dict[str, bool] = {
-    "IRANIAN_CITIES_ADMIN_ADD_READONLY_ENABLED": True,
-    "IRANIAN_CITIES_ADMIN_DELETE_READONLY_ENABLED": True,
-    "IRANIAN_CITIES_ADMIN_CHANGE_READONLY_ENABLED": True,
+    "IRANIAN_CITIES_ADMIN_ADD_READONLY_ENABLED": False,
+    "IRANIAN_CITIES_ADMIN_DELETE_READONLY_ENABLED": False,
+    "IRANIAN_CITIES_ADMIN_CHANGE_READONLY_ENABLED": False,
     "IRANIAN_CITIES_ADMIN_INLINE_ENABLED": False,
 }
diff --git a/iranian_cities/mixins/dynamic_permission.py b/iranian_cities/mixins/dynamic_permission.py
index 54473dc..f9bc69c 100644
--- a/iranian_cities/mixins/dynamic_permission.py
+++ b/iranian_cities/mixins/dynamic_permission.py
@@ -3,13 +3,13 @@
 
 class IranianCitiesAdminReadOnlyEnabled:
     def has_add_permission(self, request):
-        return sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_ADD_READONLY_ENABLED
+        return not sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_ADD_READONLY_ENABLED
 
     def has_delete_permission(self, request, obj=None):
-        return sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_DELETE_READONLY_ENABLED
+        return not sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_DELETE_READONLY_ENABLED
 
     def has_change_permission(self, request, obj=None):
-        return sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_CHANGE_READONLY_ENABLED
+        return not sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_CHANGE_READONLY_ENABLED
 
 
 class DynamicInlineAdmin:
diff --git a/tests/settings/test_admin_permissions.py b/tests/settings/test_admin_permissions.py
index b088e24..96a51fc 100644
--- a/tests/settings/test_admin_permissions.py
+++ b/tests/settings/test_admin_permissions.py
@@ -42,9 +42,9 @@ def test_iranian_cities_admin_permissions(self) -> None:
         sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_DELETE_READONLY_ENABLED = False
         sage_iranian_cities_settings.IRANIAN_CITIES_ADMIN_CHANGE_READONLY_ENABLED = True
 
-        assert settings_instance.has_add_permission(request) is True
-        assert settings_instance.has_delete_permission(request) is False
-        assert settings_instance.has_change_permission(request) is True
+        assert settings_instance.has_add_permission(request) is False
+        assert settings_instance.has_delete_permission(request) is True
+        assert settings_instance.has_change_permission(request) is False
 
     def test_dynamic_inline_admin(self) -> None:
         """