diff --git a/src/webqueue2api/api/resources/queue_list.py b/src/webqueue2api/api/resources/queue_list.py
index 46b7af2..d6d7987 100644
--- a/src/webqueue2api/api/resources/queue_list.py
+++ b/src/webqueue2api/api/resources/queue_list.py
@@ -10,6 +10,7 @@ def get(self) -> tuple:
 
         Return Codes:
                 200 (OK): On success.
+                500 (Internal Service Error): On error.
 
         Example:
                 [