diff --git a/product/ERP5/interfaces/convertable.py b/product/ERP5/interfaces/convertable.py
index 0441e576ba53586cf36206e316466d0f23879500..58635680cd6d364095c40c9305cf283738161056 100644
--- a/product/ERP5/interfaces/convertable.py
+++ b/product/ERP5/interfaces/convertable.py
@@ -109,10 +109,4 @@ class IConvertable(Interface):
     where format is an extension (ex. 'png') which can be 
     passed to IConvertable.convert or to IDownloadable.index_html
     """
-  def getPermittedTargetFormatItemList():
-    """
-    Returns the list of authorized formats for conversion
-    in the form of tuples. For each format, checks
-    if the current user can convert the current 
-    document into that format.
-    """
\ No newline at end of file
+