diff --git a/pkg/services/stateroot/network.go b/pkg/services/stateroot/network.go
index 21174c3a5..af8e6fceb 100644
--- a/pkg/services/stateroot/network.go
+++ b/pkg/services/stateroot/network.go
@@ -81,6 +81,7 @@ func (s *service) sendValidatedRoot(r *state.MPTRoot, priv *keys.PrivateKey) {
 	m := NewMessage(RootT, r)
 	m.EncodeBinary(w.BinWriter)
 	ep := &payload.Extensible{
+		Category:        Category,
 		ValidBlockStart: r.Index,
 		ValidBlockEnd:   r.Index + transaction.MaxValidUntilBlockIncrement,
 		Sender:          priv.GetScriptHash(),
diff --git a/pkg/services/stateroot/validators.go b/pkg/services/stateroot/validators.go
index fbd9a88d2..3a56041c4 100644
--- a/pkg/services/stateroot/validators.go
+++ b/pkg/services/stateroot/validators.go
@@ -68,6 +68,7 @@ func (s *service) signAndSend(r *state.MPTRoot) error {
 		return w.Err
 	}
 	e := &payload.Extensible{
+		Category:        Category,
 		ValidBlockStart: r.Index,
 		ValidBlockEnd:   r.Index + transaction.MaxValidUntilBlockIncrement,
 		Sender:          s.getAccount().PrivateKey().GetScriptHash(),