diff --git a/3.0/modules/keeporiginal/helpers/keeporiginal_event.php b/3.0/modules/keeporiginal/helpers/keeporiginal_event.php
index 5652bee6..513cb606 100644
--- a/3.0/modules/keeporiginal/helpers/keeporiginal_event.php
+++ b/3.0/modules/keeporiginal/helpers/keeporiginal_event.php
@@ -112,6 +112,7 @@ class keeporiginal_event_Core {
           }
 
           // Move the file to its new location.
+          // TODO: If the files have different extensions, then the old extension should be preserved.
           @rename($old_original, $new_original);
         }
       }
@@ -135,4 +136,4 @@ class keeporiginal_event_Core {
       }
     }
   }
-}
\ No newline at end of file
+}