diff --git a/federationapi/federationapi_test.go b/federationapi/federationapi_test.go
index 55c77f9c4..45346bc0f 100644
--- a/federationapi/federationapi_test.go
+++ b/federationapi/federationapi_test.go
@@ -31,8 +31,8 @@ func TestRoomsV3URLEscapeDoNot404(t *testing.T) {
 	fsAPI := base.FederationSenderHTTPClient()
 	// TODO: This is pretty fragile, as if anything calls anything on these nils this test will break.
 	// Unfortunately, it makes little sense to instantiate these dependencies when we just want to test routing.
-	federationapi.AddPublicRoutes(base.ExternalFederationAPIMux, base.ExternalKeyAPIMux, &cfg.FederationAPI, nil, nil, keyRing, nil, fsAPI, nil, nil, nil)
-	baseURL, cancel := test.ListenAndServe(t, base.ExternalFederationAPIMux, true)
+	federationapi.AddPublicRoutes(base.PublicFederationAPIMux, base.PublicKeyAPIMux, &cfg.FederationAPI, nil, nil, keyRing, nil, fsAPI, nil, nil, nil)
+	baseURL, cancel := test.ListenAndServe(t, base.PublicFederationAPIMux, true)
 	defer cancel()
 	serverName := gomatrixserverlib.ServerName(strings.TrimPrefix(baseURL, "https://"))