diff --git a/nglview/widget.py b/nglview/widget.py
index 165bb04c..3edfc032 100644
--- a/nglview/widget.py
+++ b/nglview/widget.py
@@ -109,6 +109,7 @@ def _unset_serialization(views):
_set_serialization(views)
# FIXME: allow add jquery-ui link?
snippet = '\n'
+ snippet += '\n'
snippet += embed.embed_snippet(views)
html_code = embed.html_template.format(title='nglview-demo',
snippet=snippet)