diff --git a/src/github.com/matrix-org/dendrite/clientapi/readers/memberships.go b/src/github.com/matrix-org/dendrite/clientapi/readers/memberships.go
index c734e3b34..9d7519ee7 100644
--- a/src/github.com/matrix-org/dendrite/clientapi/readers/memberships.go
+++ b/src/github.com/matrix-org/dendrite/clientapi/readers/memberships.go
@@ -23,9 +23,14 @@ import (
 	"github.com/matrix-org/dendrite/clientapi/jsonerror"
 	"github.com/matrix-org/dendrite/common/config"
 	"github.com/matrix-org/dendrite/roomserver/api"
+	"github.com/matrix-org/gomatrixserverlib"
 	"github.com/matrix-org/util"
 )
 
+type response struct {
+	Chunk []gomatrixserverlib.ClientEvent `json:"chunk"`
+}
+
 // GetMemberships implements GET /rooms/{roomId}/members
 func GetMemberships(
 	req *http.Request, device *authtypes.Device, roomID string,
@@ -50,6 +55,6 @@ func GetMemberships(
 
 	return util.JSONResponse{
 		Code: 200,
-		JSON: queryRes.JoinEvents,
+		JSON: response{queryRes.JoinEvents},
 	}
 }