diff --git a/modules/config.py b/modules/config.py
index 001cf949d..8609b4154 100644
--- a/modules/config.py
+++ b/modules/config.py
@@ -520,10 +520,14 @@ def init_temp_path(path: str | None, default_path: str) -> str:
     image_count += 1
     default_ip_images[image_count] = get_config_item_or_set_default(
         key=f'default_ip_image_{image_count}',
-        default_value=None,
-        validator=lambda x: x is None or isinstance(x, str) and os.path.exists(x),
+        default_value='None',
+        validator=lambda x: x == 'None' or isinstance(x, str) and os.path.exists(x),
         expected_type=str
     )
+
+    if default_ip_images[image_count] == 'None':
+        default_ip_images[image_count] = None
+
     default_ip_types[image_count] = get_config_item_or_set_default(
         key=f'default_ip_type_{image_count}',
         default_value=modules.flags.default_ip,
@@ -698,7 +702,7 @@ def init_temp_path(path: str | None, default_path: str) -> str:
 default_inpaint_mask_sam_model = get_config_item_or_set_default(
     key='default_inpaint_mask_sam_model',
     default_value='vit_b',
-    validator=lambda x: x in [y[1] for y in modules.flags.inpaint_mask_sam_model if y[1] == x],
+    validator=lambda x: x in modules.flags.inpaint_mask_sam_model,
     expected_type=str
 )