diff --git a/scalekit/actions/models/custom_provider.py b/scalekit/actions/models/custom_provider.py
index e0c466d..53009e1 100644
--- a/scalekit/actions/models/custom_provider.py
+++ b/scalekit/actions/models/custom_provider.py
@@ -260,7 +260,7 @@ def from_dict(cls, d: dict) -> "AuthPattern":
             type=d.get("type", ""),
             display_name=d.get("display_name", ""),
             description=d.get("description", ""),
-            fields=[AuthField.from_dict(f) for f in d.get("fields", [])],
+            fields=[AuthField.from_dict(f) for f in d.get("fields") or []],
             is_mcp=d.get("is_mcp", False),
             oauth_config=oauth_cfg,
         )