diff --git a/PluralKit.API/Controllers/v2/AutoproxyControllerV2.cs b/PluralKit.API/Controllers/v2/AutoproxyControllerV2.cs
index 23a118be..25227322 100644
--- a/PluralKit.API/Controllers/v2/AutoproxyControllerV2.cs
+++ b/PluralKit.API/Controllers/v2/AutoproxyControllerV2.cs
@@ -57,7 +57,11 @@ public class AutoproxyControllerV2: PKControllerBase
 
         PKMember? member = null;
         if (updateMember)
+        {
             member = await ResolveMember(data.Value<string>("autoproxy_member"));
+            if (member != null && ContextFor(member) != LookupContext.ByOwner)
+                throw Errors.GenericMissingPermissions;
+        }
 
         var patch = AutoproxyPatch.FromJson(data, member?.Id);