diff --git a/pkg/innerring/processors/netmap/process_peers.go b/pkg/innerring/processors/netmap/process_peers.go
index 1aece6441..b8da13078 100644
--- a/pkg/innerring/processors/netmap/process_peers.go
+++ b/pkg/innerring/processors/netmap/process_peers.go
@@ -28,13 +28,16 @@ func (np *Processor) processAddPeer(node []byte) {
 		return
 	}
 
+	keyString := hex.EncodeToString(nodeInfo.PublicKey)
 	np.log.Info("approving network map candidate",
-		zap.String("key", hex.EncodeToString(nodeInfo.PublicKey)),
-	)
+		zap.String("key", keyString))
 
-	err = invoke.ApprovePeer(np.morphClient, np.netmapContract, node)
-	if err != nil {
-		np.log.Error("can't invoke netmap.AddPeer", zap.Error(err))
+	exists := np.netmapSnapshot.touch(keyString, np.epochState.EpochCounter())
+	if !exists {
+		err = invoke.ApprovePeer(np.morphClient, np.netmapContract, node)
+		if err != nil {
+			np.log.Error("can't invoke netmap.AddPeer", zap.Error(err))
+		}
 	}
 }