diff --git a/freqtrade/constants.py b/freqtrade/constants.py
index 51ded6c49..e074718ca 100644
--- a/freqtrade/constants.py
+++ b/freqtrade/constants.py
@@ -50,6 +50,8 @@ USERPATH_STRATEGIES = 'strategies'
 USERPATH_NOTEBOOKS = 'notebooks'
 
 TELEGRAM_SETTING_OPTIONS = ['on', 'off', 'silent']
+WEBHOOK_FORMAT_OPTIONS = ['form', 'json', 'raw']
+
 ENV_VAR_PREFIX = 'FREQTRADE__'
 
 NON_OPEN_EXCHANGE_STATES = ('cancelled', 'canceled', 'closed', 'expired')
@@ -312,12 +314,16 @@ CONF_SCHEMA = {
             'type': 'object',
             'properties': {
                 'enabled': {'type': 'boolean'},
+                'url': {'type': 'string'},
+                'format': {'type': 'string', 'enum': WEBHOOK_FORMAT_OPTIONS, 'default': 'form'},
                 'retries': {'type': 'integer', 'minimum': 0},
                 'retry_delay': {'type': 'number', 'minimum': 0},
                 'webhookbuy': {'type': 'object'},
                 'webhookbuycancel': {'type': 'object'},
+                'webhookbuyfill': {'type': 'object'},
                 'webhooksell': {'type': 'object'},
                 'webhooksellcancel': {'type': 'object'},
+                'webhooksellfill': {'type': 'object'},
                 'webhookstatus': {'type': 'object'},
             },
         },
diff --git a/freqtrade/rpc/webhook.py b/freqtrade/rpc/webhook.py
index 1973f212e..2a848787d 100644
--- a/freqtrade/rpc/webhook.py
+++ b/freqtrade/rpc/webhook.py
@@ -33,10 +33,6 @@ class Webhook(RPCHandler):
         self._retries = self._config['webhook'].get('retries', 0)
         self._retry_delay = self._config['webhook'].get('retry_delay', 0.1)
 
-        if not (self._format in ['form', 'json', 'raw']):
-            raise NotImplementedError('Unknown webhook format `{}`, possible values are '
-                                      '`form` (default), `json`, and `raw`'.format(self._format))
-
     def cleanup(self) -> None:
         """
         Cleanup pending module resources.