diff --git a/src/wfuzz/fuzzobjects.py b/src/wfuzz/fuzzobjects.py
index caaf30b7..b3c514d4 100644
--- a/src/wfuzz/fuzzobjects.py
+++ b/src/wfuzz/fuzzobjects.py
@@ -339,7 +339,8 @@ def update_from_raw_http(self, raw, scheme, raw_response=None, raw_content=None)
 
         if raw_response:
             rp = Response()
-            raw_response = python2_3_convert_from_unicode(raw_response.decode("utf-8", errors='surrogateescape'))
+            if not isinstance(raw_response, str):
+                raw_response = python2_3_convert_from_unicode(raw_response.decode("utf-8", errors='surrogateescape'))
             rp.parseResponse(raw_response, raw_content)
             self._request.response = rp