diff --git a/locust/contrib/fasthttp.py b/locust/contrib/fasthttp.py
index 6d022a0c46..754dcee7ac 100644
--- a/locust/contrib/fasthttp.py
+++ b/locust/contrib/fasthttp.py
@@ -500,6 +500,11 @@ def status_code(self) -> int:
         """
         return self._response.get_code() if self._response is not None else 0
 
+    @property
+    def ok(self):
+        """Returns True if :attr:`status_code` is less than 400, False if not."""
+        return self.status_code < 400
+
     def _content(self):
         if self.headers is None:
             return None