diff --git a/pkg/app/provider/wopi/wopi.go b/pkg/app/provider/wopi/wopi.go
index e3f503f2a25..c0a4842283d 100644
--- a/pkg/app/provider/wopi/wopi.go
+++ b/pkg/app/provider/wopi/wopi.go
@@ -155,6 +155,11 @@ func (p *wopiProvider) GetAppURL(ctx context.Context, resource *provider.Resourc
 	}
 	if u.Id.Type == userpb.UserType_USER_TYPE_LIGHTWEIGHT || u.Id.Type == userpb.UserType_USER_TYPE_FEDERATED {
 		q.Add("userid", resource.Owner.OpaqueId+"@"+resource.Owner.Idp)
+		if !strings.Contains(u.DisplayName, "(") {
+			// the display name was not decorated with `(domain)` by the auth provider,
+			// assume this is an OCM user and append the corresponding Idp
+			u.DisplayName = u.DisplayName + "@" + u.Id.Idp
+		}
 	} else {
 		q.Add("userid", u.Id.OpaqueId+"@"+u.Id.Idp)
 	}