diff --git a/awx/main/consumers.py b/awx/main/consumers.py
index b6d8872ebd..4fc1196dbe 100644
--- a/awx/main/consumers.py
+++ b/awx/main/consumers.py
@@ -75,7 +75,7 @@ class WebsocketSecretAuthHelper:
         nonce_diff = now - nonce_parsed
         if abs(nonce_diff) > nonce_tolerance:
             logger.warn(f"Potential replay attack or machine(s) time out of sync by {nonce_diff} seconds.")
-            raise ValueError("Potential replay attack or machine(s) time out of sync by {nonce_diff} seconds.")
+            raise ValueError(f"Potential replay attack or machine(s) time out of sync by {nonce_diff} seconds.")
 
         return True