1 files changed, 0 insertions, 2 deletions
diff --git a/synapse/rest/client/versions.py b/synapse/rest/client/versions.py
index 547bf34df1..1910648755 100644
--- a/synapse/rest/client/versions.py
+++ b/synapse/rest/client/versions.py
@@ -124,8 +124,6 @@ class VersionsRestServlet(RestServlet):
                     is not None,
                     # Adds support for relation-based redactions as per MSC3912.
                     "org.matrix.msc3912": self.config.experimental.msc3912_enabled,
-                    # Adds support for unstable "intentional mentions" behaviour.
-                    "org.matrix.msc3952_intentional_mentions": self.config.experimental.msc3952_intentional_mentions,
                     # Whether recursively provide relations is supported.
                     "org.matrix.msc3981": self.config.experimental.msc3981_recurse_relations,
                     # Adds support for deleting account data.