1 files changed, 0 insertions, 1 deletions
diff --git a/synapse/rest/client/versions.py b/synapse/rest/client/versions.py
index 9a65aa4843..7ee6b5505b 100644
--- a/synapse/rest/client/versions.py
+++ b/synapse/rest/client/versions.py
@@ -100,7 +100,6 @@ class VersionsRestServlet(RestServlet):
                     # Adds support for jump to date endpoints (/timestamp_to_event) as per MSC3030
                     "org.matrix.msc3030": self.config.experimental.msc3030_enabled,
                     # Adds support for thread relations, per MSC3440.
-                    "org.matrix.msc3440": self.config.experimental.msc3440_enabled,
                     "org.matrix.msc3440.stable": True,  # TODO: remove when "v1.3" is added above
                 },
             },