diff --git a/lightning/types/plots.py b/lightning/types/plots.py
index 18fa9e0..ffe039c 100644
--- a/lightning/types/plots.py
+++ b/lightning/types/plots.py
@@ -651,4 +651,5 @@ def clean(spec):
 
         outdict = {}
         outdict = add_property(outdict, spec, 'spec')
+
         return outdict
diff --git a/lightning/visualization.py b/lightning/visualization.py
index 0fd8944..4ca9575 100644
--- a/lightning/visualization.py
+++ b/lightning/visualization.py
@@ -107,7 +107,7 @@ def _create(cls, session=None, data=None, images=None, type=None, options=None,
             if description:
                 payload['description'] = description
             headers = {'Content-type': 'application/json', 'Accept': 'text/plain'}
-            r = requests.post(url, data=json.dumps(payload), headers=headers, auth=session.auth)
+            r = requests.post(url, data=json.dumps(payload, allow_nan=False), headers=headers, auth=session.auth)
             if r.status_code == 404:
                 raise Exception(r.text)
             elif not r.status_code == requests.codes.ok: