diff --git a/changelog.d/7785.feature b/changelog.d/7785.feature
new file mode 100644
index 0000000000..d86ddd1c90
--- /dev/null
+++ b/changelog.d/7785.feature
@@ -0,0 +1 @@
+Add `/user/{user_id}/shared_rooms/{other_user_id}` endpoint
\ No newline at end of file
diff --git a/synapse/rest/client/v2_alpha/shared_rooms.py b/synapse/rest/client/v2_alpha/shared_rooms.py
index 11e18debf1..9046f9c223 100644
--- a/synapse/rest/client/v2_alpha/shared_rooms.py
+++ b/synapse/rest/client/v2_alpha/shared_rooms.py
@@ -23,7 +23,7 @@ logger = logging.getLogger(__name__)
 
 class UserSharedRoomsServlet(RestServlet):
     """
-    GET /user/{user_id}/shared_rooms/(?P<other_user_id>[^/]*) HTTP/1.1
+    GET /user/{user_id}/shared_rooms/{other_user_id} HTTP/1.1
     """
 
     PATTERNS = client_patterns(