diff --git a/services/collaboration/pkg/service/grpc/v0/service.go b/services/collaboration/pkg/service/grpc/v0/service.go
index 8c203b10c7..2232f1dd89 100644
--- a/services/collaboration/pkg/service/grpc/v0/service.go
+++ b/services/collaboration/pkg/service/grpc/v0/service.go
@@ -151,6 +151,7 @@ func (s *Service) OpenInApp(
 
 		q := u.Query()
 		q.Add("WOPISrc", wopiSrcURL.String())
+		q.Add("dchat", "1")
 		qs := q.Encode()
 		u.RawQuery = qs