diff --git a/capsulflask/btcpay/client.py b/capsulflask/btcpay/client.py
index 4bad199..5b0f999 100644
--- a/capsulflask/btcpay/client.py
+++ b/capsulflask/btcpay/client.py
@@ -51,7 +51,13 @@ class Client:
       raise BtcPayArgumentError("Price must be formatted as a float")
     
   def response_error(self, response):
-    raise BtcPayBtcPayError('%(code)d: %(message)s' % {'code': response.status_code, 'message': response.json()['error']})
+    error_message = response.text
+    try:
+      error_json = json.loads(error_message)
+      error_message = error_json['error']
+    except:
+      pass
+    raise BtcPayBtcPayError('%(code)d: %(message)s' % {'code': response.status_code, 'message': error_message})
 
   def unsigned_request(self, path, payload=None):
     """