diff --git a/src/servala/core/models/service.py b/src/servala/core/models/service.py
index ba1871d..4c6ecd0 100644
--- a/src/servala/core/models/service.py
+++ b/src/servala/core/models/service.py
@@ -574,7 +574,7 @@ class ServiceInstance(ServalaModelMixin, models.Model):
         unique_together = [("name", "organization", "context")]
         rules_permissions = {
             "view": rules.is_staff | perms.is_organization_member,
-            "change": rules.is_staff | perms.is_organization_admin,
+            "change": rules.is_staff | perms.is_organization_member,
             "delete": rules.is_staff | perms.is_organization_admin,
             "add": rules.is_authenticated,
         }
diff --git a/src/servala/core/rules.py b/src/servala/core/rules.py
index cf4dc1c..5ead2c3 100644
--- a/src/servala/core/rules.py
+++ b/src/servala/core/rules.py
@@ -13,30 +13,15 @@ def has_organization_role(user, org, roles):
 
 
 @rules.predicate
-def is_organization_owner(user, obj):
-    if hasattr(obj, "organization"):
-        org = obj.organization
-    else:
-        org = obj
+def is_organization_owner(user, org):
     return has_organization_role(user, org, ["owner"])
 
 
 @rules.predicate
-def is_organization_admin(user, obj):
-    if hasattr(obj, "organization"):
-        org = obj.organization
-    else:
-        org = obj
+def is_organization_admin(user, org):
     return has_organization_role(user, org, ["owner", "admin"])
 
 
 @rules.predicate
-def is_organization_member(user, obj):
-    if hasattr(obj, "organization"):
-        org = obj.organization
-    else:
-        org = obj
+def is_organization_member(user, org):
     return has_organization_role(user, org, None)
-
-
-rules.add_perm("core", rules.is_staff)