diff --git a/changelog/unreleased/fix-ocm-invite.md b/changelog/unreleased/fix-ocm-invite.md
new file mode 100644
index 0000000000..95391bad5b
--- /dev/null
+++ b/changelog/unreleased/fix-ocm-invite.md
@@ -0,0 +1,5 @@
+Bugfix: Deny Users invite themselves to their own federated connection
+
+Deny Users invite themselves to their own federated connection
+
+https://github.com/cs3org/reva/pull/5077
\ No newline at end of file
diff --git a/internal/grpc/services/ocminvitemanager/ocminvitemanager.go b/internal/grpc/services/ocminvitemanager/ocminvitemanager.go
index ec36801334..05f92c91ae 100644
--- a/internal/grpc/services/ocminvitemanager/ocminvitemanager.go
+++ b/internal/grpc/services/ocminvitemanager/ocminvitemanager.go
@@ -170,6 +170,12 @@ func (s *service) ForwardInvite(ctx context.Context, req *invitepb.ForwardInvite
 		return nil, err
 	}
 
+	if req.GetOriginSystemProvider().Domain == s.conf.ProviderDomain {
+		return &invitepb.ForwardInviteResponse{
+			Status: status.NewInvalid(ctx, "can not accept an invite from the same instance"),
+		}, nil
+	}
+
 	// Accept the invitation on the remote OCM provider
 	remoteUser, err := s.ocmClient.InviteAccepted(ctx, ocmEndpoint, &client.InviteAcceptedRequest{
 		Token:             req.InviteToken.GetToken(),