diff --git a/src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedMap.kt b/src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedMap.kt
index 45e3ed90..504e98e2 100644
--- a/src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedMap.kt
+++ b/src/main/kotlin/ru/dbotthepony/kstarbound/network/syncher/NetworkedMap.kt
@@ -77,6 +77,13 @@ class NetworkedMap<K, V>(
 		})
 	}
 
+	// forces re-network of specified index
+	fun markIndexDirty(index: K) {
+		if (index in this) {
+			backlog.add(currentVersion() to Entry(Action.ADD, KOptional(nativeKey.copy(index)), KOptional(nativeValue.copy(this[index] as V)))) // not null!! assert because V might be nullable
+		}
+	}
+
 	private val listeners = CopyOnWriteArrayList<Listener>()
 
 	private inner class Listener(val listener: ListenableMap.MapListener<K, V>) : Listenable.L {