diff --git a/tcllib.py b/tcllib.py
index 22ad245..e08ea90 100644
--- a/tcllib.py
+++ b/tcllib.py
@@ -87,6 +87,8 @@ class FotaCheck:
             return req.text
         elif req.status_code == 204:
             raise requests.exceptions.HTTPError("No update available.", response=req)
+        elif req.status_code == 404:
+            raise requests.exceptions.HTTPError("No data for requested CUREF/FV combination.", response=req)
         elif req.status_code in (500, 503):
             raise requests.exceptions.HTTPError("Server busy, try again later.", response=req)
         else: