diff --git a/muk_utils/__manifest__.py b/muk_utils/__manifest__.py
index b93790a..20d019a 100644
--- a/muk_utils/__manifest__.py
+++ b/muk_utils/__manifest__.py
@@ -22,7 +22,7 @@
 { 
     "name": "MuK Utils",
     "summary": """Utility Features""",
-    "version": '12.0.2.0.4',  
+    "version": '12.0.2.0.5',  
     "category": 'Extra Tools',   
     "license": "LGPL-3",
     "author": "MuK IT",
diff --git a/muk_utils/models/ir_attachment.py b/muk_utils/models/ir_attachment.py
index 8714485..1d1a2df 100644
--- a/muk_utils/models/ir_attachment.py
+++ b/muk_utils/models/ir_attachment.py
@@ -103,7 +103,7 @@ class IrAttachment(models.Model):
     @api.multi
     def migrate(self, batch_size=None):
         commit_on_batch = bool(batch_size)
-        batch_size = batch_size or len(self) 
+        batch_size = batch_size or len(self) or 1
         storage_location = self._storage().upper()
         batches = math.ceil(len(self) / batch_size)
         for index, attachment in enumerate(self, start=1):