diff --git a/cartads/models.py b/cartads/models.py
index c81bc73..f907016 100644
--- a/cartads/models.py
+++ b/cartads/models.py
@@ -201,7 +201,7 @@ class CartADS(BaseResource):
                         obj, idPiece, codePiece = key.split("_")
                         filenameInZip = "Pieces/"+ idPiece + "-" + codePiece
                         if "." in filename:
-                            filenameInZip += filename[filename.find("."):]
+                            filenameInZip += filename[filename.rfind("."):]
                     print >> open('/home/grandlyon/log/cartads.debug', 'a+'), datetime.datetime.now(), "filenameInZip: ", filenameInZip
                     zf.writestr(filenameInZip, content)