diff --git a/examples/copy_list.py b/examples/copy_list.py
index b7a1a55..16cb737 100644
--- a/examples/copy_list.py
+++ b/examples/copy_list.py
@@ -4,6 +4,7 @@
 import sys
 
 from pymisp import PyMISP
+import json
 
 from keys import cert, priv
 
@@ -30,7 +31,7 @@ def init(cert_to_priv=True):
 def _to_utf8(request):
     to_return = None
     if 'json' in request.headers['content-type']:
-        to_return = request.json()
+        to_return = json.dumps(request.json())
     else:
         to_return = request.text.encode('utf-8')
     return to_return
diff --git a/pymisp/api.py b/pymisp/api.py
index edf047f..cc101d3 100644
--- a/pymisp/api.py
+++ b/pymisp/api.py
@@ -84,7 +84,7 @@ class PyMISP(object):
             :param event: Event object to add
         """
         session = self.__prepare_session()
-        return session.post(self.url, data=json.dumps(event))
+        return session.post(self.url, data=event)
 
     def update_event(self, event_id, event):
         """
@@ -94,7 +94,7 @@ class PyMISP(object):
             :param event: Elements to add
         """
         session = self.__prepare_session()
-        return session.post(self.rest.format(event_id), data=json.dumps(event))
+        return session.post(self.rest.format(event_id), data=event)
 
     def delete_event(self, event_id):
         """