diff --git a/gradle.properties b/gradle.properties
index 65476b1..9dde8ab 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -4,7 +4,7 @@ kotlin.code.style=official
 specifyKotlinAsDependency=false
 
 projectGroup=ru.dbotthepony.kommons
-projectVersion=2.9.8
+projectVersion=2.9.9
 
 guavaDepVersion=33.0.0
 gsonDepVersion=2.8.9
diff --git a/src/main/kotlin/ru/dbotthepony/kommons/io/DelegateSyncher.kt b/src/main/kotlin/ru/dbotthepony/kommons/io/DelegateSyncher.kt
index 5a7a34f..a182fa1 100644
--- a/src/main/kotlin/ru/dbotthepony/kommons/io/DelegateSyncher.kt
+++ b/src/main/kotlin/ru/dbotthepony/kommons/io/DelegateSyncher.kt
@@ -410,7 +410,7 @@ class DelegateSyncher : Observer {
 
 					synchronized(it.changelistLock) {
 						it.changelist.removeIf { it.key.valueEquals(key) }
-						it.changelist.add(MapAction(KOptional(keyCodec.copy(key)), KOptional(valueCodec.copy(value)), REMOVE))
+						it.changelist.add(MapAction(KOptional(keyCodec.copy(key)), KOptional(), REMOVE))
 					}
 
 					it.markDirty()