1 files changed, 2 insertions, 3 deletions
diff --git a/synapse/api/errors.py b/synapse/api/errors.py
index b44088f9b3..dd4a1ae706 100644
--- a/synapse/api/errors.py
+++ b/synapse/api/errors.py
@@ -517,8 +517,6 @@ class InvalidCaptchaError(SynapseError):
 class LimitExceededError(SynapseError):
     """A client has sent too many requests and is being throttled."""
 
-    include_retry_after_header = False
-
     def __init__(
         self,
         limiter_name: str,
@@ -526,9 +524,10 @@ class LimitExceededError(SynapseError):
         retry_after_ms: Optional[int] = None,
         errcode: str = Codes.LIMIT_EXCEEDED,
     ):
+        # Use HTTP header Retry-After to enable library-assisted retry handling.
         headers = (
             {"Retry-After": str(math.ceil(retry_after_ms / 1000))}
-            if self.include_retry_after_header and retry_after_ms is not None
+            if retry_after_ms is not None
             else None
         )
         super().__init__(code, "Too Many Requests", errcode, headers=headers)