diff --git a/authentik/core/api/utils.py b/authentik/core/api/utils.py
index 380208e08..f768bb812 100644
--- a/authentik/core/api/utils.py
+++ b/authentik/core/api/utils.py
@@ -14,7 +14,7 @@ def is_dict(value: Any):
     """Ensure a value is a dictionary, useful for JSONFields"""
     if isinstance(value, dict):
         return
-    raise ValidationError("Value must be a dictionary.")
+    raise ValidationError("Value must be a dictionary, and not have any duplicate keys.")
 
 
 class PassiveSerializer(Serializer):
diff --git a/authentik/outposts/api/outposts.py b/authentik/outposts/api/outposts.py
index 4cf47d907..7e6972171 100644
--- a/authentik/outposts/api/outposts.py
+++ b/authentik/outposts/api/outposts.py
@@ -51,7 +51,7 @@ class OutpostSerializer(ModelSerializer):
                 raise ValidationError(
                     (
                         f"Outpost type {self.initial_data['type']} can't be used with "
-                        f"{type(provider)} providers."
+                        f"{provider.__class__.__name} providers."
                     )
                 )
         return providers