diff --git a/redfish/connection.py b/redfish/connection.py
index 6ff9984..50bd349 100644
--- a/redfish/connection.py
+++ b/redfish/connection.py
@@ -215,14 +215,15 @@ class RedfishConnection(object):
     def rest_get(self, host, suburi, request_headers, user_name, password):
         """Generic REST GET handler"""
         # NOTE:  be prepared for various HTTP responses including 500, 404, etc.
-        return rest_op('GET', host, suburi, request_headers, None, user_name, password)
+        # XXX need parameter sanitization; request_headers must be a dict or None
+        return self.rest_op('GET', host, suburi, request_headers, None, user_name, password)
 
 
     def rest_patch(self, server, suburi, request_headers, request_body, user_name, password):
         """REST PATCH"""
         if not isinstance(request_headers, dict):  request_headers = dict()
         request_headers['Content-Type'] = 'application/json'
-        return rest_op('PATCH', server, suburi, request_headers, request_body, user_name, password)
+        return self.rest_op('PATCH', server, suburi, request_headers, request_body, user_name, password)
         # NOTE:  be prepared for various HTTP responses including 500, 404, 202 etc.
 
 
@@ -230,20 +231,20 @@ class RedfishConnection(object):
         """REST PUT"""
         if not isinstance(request_headers, dict):  request_headers = dict()
         request_headers['Content-Type'] = 'application/json'
-        return rest_op('PUT', host, suburi, request_headers, request_body, user_name, password)
+        return self.rest_op('PUT', host, suburi, request_headers, request_body, user_name, password)
         # NOTE:  be prepared for various HTTP responses including 500, 404, 202 etc.
 
     # REST POST
     def rest_post(self, host, suburi, request_headers, request_body, user_name, password):
         if not isinstance(request_headers, dict):  request_headers = dict()
         request_headers['Content-Type'] = 'application/json'
-        return rest_op('POST', host, suburi, request_headers, request_body, user_name, password)
+        return self.rest_op('POST', host, suburi, request_headers, request_body, user_name, password)
         # NOTE:  don't assume any newly created resource is included in the response.  Only the Location header matters.
         # the response body may be the new resource, it may be an ExtendedError, or it may be empty.
 
     # REST DELETE
     def rest_delete(self, host, suburi, request_headers, user_name, password):
-        return rest_op('DELETE', host, suburi, request_headers, None, user_name, password)
+        return self.rest_op('DELETE', host, suburi, request_headers, None, user_name, password)
         # NOTE:  be prepared for various HTTP responses including 500, 404, etc.
         # NOTE:  response may be an ExtendedError or may be empty