diff --git a/addons/web/models/ir_qweb.py b/addons/web/models/ir_qweb.py
index 4ffab27bd5e..875899f7d57 100644
--- a/addons/web/models/ir_qweb.py
+++ b/addons/web/models/ir_qweb.py
@@ -52,7 +52,7 @@ class Image(models.AbstractModel):
             filename = options['filename']
         else:
             filename = record.display_name
-        filename = filename.replace('/', '-').replace('\\', '-')
+        filename = filename.replace('/', '-').replace('\\', '-').replace('..', '--')
 
         src = '/web/image/%s/%s/%s%s/%s?unique=%s' % (record._name, record.id, options.get('preview_image', field_name), max_size, url_quote(filename), sha)