diff --git a/pyjsonnlp/microservices/flask_server.py b/pyjsonnlp/microservices/flask_server.py
index 023f783..5660899 100644
--- a/pyjsonnlp/microservices/flask_server.py
+++ b/pyjsonnlp/microservices/flask_server.py
@@ -81,6 +81,10 @@ def map_value(key, val):
         args = dict((k, map_value(k, v)) for k, v in request.args.items())
         for k, v in request.form.items():
             args[k] = map_value(k, v)
+        if request.is_json:
+            data = request.get_json()
+            for k, v in data.items():
+                args[k] = map_value(k, v)
 
         return args