diff --git a/app/models/project.rb b/app/models/project.rb
index 5554c17..f3a877a 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -14,15 +14,15 @@ class Project < ActiveRecord::Base
   # --- Permissions --- #
 
   def create_permitted?
-    acting_user.administrator?
+    owner_is? acting_user
   end
 
   def update_permitted?
-    acting_user.administrator?
+    acting_user.administrator? || (owner_is?(acting_user) && !owner_changed?)
   end
 
   def destroy_permitted?
-    acting_user.administrator?
+    acting_user.administrator? || owner_is?(acting_user)
   end
 
   def view_permitted?(field)