diff --git a/changelog/unreleased/missing-wopi-keys.md b/changelog/unreleased/missing-wopi-keys.md
new file mode 100644
index 0000000000..cab48f9c23
--- /dev/null
+++ b/changelog/unreleased/missing-wopi-keys.md
@@ -0,0 +1,5 @@
+Enhancement: Add missing WOPI features
+
+We added the feature to disable the chat for onlyoffice and added the missing language parameters to the wopi app url.
+
+https://github.com/owncloud/ocis/pull/9580
diff --git a/services/collaboration/pkg/service/grpc/v0/service_test.go b/services/collaboration/pkg/service/grpc/v0/service_test.go
index c1467ee321..ca433f035f 100644
--- a/services/collaboration/pkg/service/grpc/v0/service_test.go
+++ b/services/collaboration/pkg/service/grpc/v0/service_test.go
@@ -5,6 +5,7 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/cs3org/reva/v2/pkg/utils"
 	"github.com/golang-jwt/jwt/v4"
 	. "github.com/onsi/ginkgo/v2"
 	. "github.com/onsi/gomega"
@@ -151,6 +152,50 @@ var _ = Describe("Discovery", func() {
 				Username: "username",
 			}
 
+			req := &appproviderv1beta1.OpenInAppRequest{
+				ResourceInfo: &providerv1beta1.ResourceInfo{
+					Id: &providerv1beta1.ResourceId{
+						StorageId: "myStorage",
+						OpaqueId:  "storageOpaque001",
+						SpaceId:   "SpaceA",
+					},
+					Path: "/path/to/file.docx",
+				},
+				ViewMode:    appproviderv1beta1.ViewMode_VIEW_MODE_READ_WRITE,
+				AccessToken: MintToken(myself, cfg.Wopi.Secret, nowTime),
+			}
+			req.Opaque = utils.AppendPlainToOpaque(req.Opaque, "lang", "de")
+
+			gatewayClient.On("WhoAmI", mock.Anything, mock.Anything).Times(1).Return(&gatewayv1beta1.WhoAmIResponse{
+				Status: status.NewOK(ctx),
+				User:   myself,
+			}, nil)
+
+			resp, err := srv.OpenInApp(ctx, req)
+			Expect(err).To(Succeed())
+			Expect(resp.GetStatus().GetCode()).To(Equal(rpcv1beta1.Code_CODE_OK))
+			Expect(resp.GetAppUrl().GetMethod()).To(Equal("POST"))
+			Expect(resp.GetAppUrl().GetAppUrl()).To(Equal("https://test.server.prv/hosting/wopi/word/edit?UI_LLCC=de&WOPISrc=https%3A%2F%2Fwopiserver.test.prv%2Fwopi%2Ffiles%2F2f6ec18696dd1008106749bd94106e5cfad5c09e15de7b77088d03843e71b43e&lang=de&ui=de"))
+			Expect(resp.GetAppUrl().GetFormParameters()["access_token_ttl"]).To(Equal(strconv.FormatInt(nowTime.Add(5*time.Hour).Unix()*1000, 10)))
+		})
+
+		It("Success", func() {
+			ctx := context.Background()
+			nowTime := time.Now()
+
+			cfg.Wopi.WopiSrc = "https://wopiserver.test.prv"
+			cfg.Wopi.Secret = "my_supa_secret"
+			cfg.Wopi.DisableChat = true
+
+			myself := &userv1beta1.User{
+				Id: &userv1beta1.UserId{
+					Idp:      "myIdp",
+					OpaqueId: "opaque001",
+					Type:     userv1beta1.UserType_USER_TYPE_PRIMARY,
+				},
+				Username: "username",
+			}
+
 			req := &appproviderv1beta1.OpenInAppRequest{
 				ResourceInfo: &providerv1beta1.ResourceInfo{
 					Id: &providerv1beta1.ResourceId{