diff --git a/src/base-apis.js b/src/base-apis.js
index 37c3d76d63d..5b2a70b816a 100644
--- a/src/base-apis.js
+++ b/src/base-apis.js
@@ -2378,18 +2378,27 @@ MatrixBaseApis.prototype.reportEvent = function(roomId, eventId, score, reason)
  * Fetches or paginates a summary of a space as defined by MSC2946
  * @param {string} roomId The ID of the space-room to use as the root of the summary.
  * @param {number?} maxRoomsPerSpace The maximum number of rooms to return per subspace.
+ * @param {boolean?} suggestedOnly Whether to only return rooms with suggested=true.
  * @param {boolean?} autoJoinOnly Whether to only return rooms with auto_join=true.
  * @param {number?} limit The maximum number of rooms to return in total.
  * @param {string?} batch The opaque token to paginate a previous summary request.
  * @returns {Promise} the response, with next_batch, rooms, events fields.
  */
-MatrixBaseApis.prototype.getSpaceSummary = function(roomId, maxRoomsPerSpace, autoJoinOnly, limit, batch) {
+MatrixBaseApis.prototype.getSpaceSummary = function(
+    roomId,
+    maxRoomsPerSpace,
+    suggestedOnly,
+    autoJoinOnly,
+    limit,
+    batch,
+) {
     const path = utils.encodeUri("/rooms/$roomId/spaces", {
         $roomId: roomId,
     });
 
     return this._http.authedRequest(undefined, "POST", path, null, {
         max_rooms_per_space: maxRoomsPerSpace,
+        suggested_only: suggestedOnly,
         auto_join_only: autoJoinOnly,
         limit,
         batch,