diff --git a/freqtrade/constants.py b/freqtrade/constants.py
index e775e39fc..51ded6c49 100644
--- a/freqtrade/constants.py
+++ b/freqtrade/constants.py
@@ -312,6 +312,8 @@ CONF_SCHEMA = {
             'type': 'object',
             'properties': {
                 'enabled': {'type': 'boolean'},
+                'retries': {'type': 'integer', 'minimum': 0},
+                'retry_delay': {'type': 'number', 'minimum': 0},
                 'webhookbuy': {'type': 'object'},
                 'webhookbuycancel': {'type': 'object'},
                 'webhooksell': {'type': 'object'},
diff --git a/freqtrade/rpc/webhook.py b/freqtrade/rpc/webhook.py
index f76d50b0e..1973f212e 100644
--- a/freqtrade/rpc/webhook.py
+++ b/freqtrade/rpc/webhook.py
@@ -33,9 +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 self._retries < 0: self._retries = 0
-        if self._retry_delay < 0: self._retry_delay = 0
-
         if not (self._format in ['form', 'json', 'raw']):
             raise NotImplementedError('Unknown webhook format `{}`, possible values are '
                                       '`form` (default), `json`, and `raw`'.format(self._format))