diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedErrorOnConcurrentAccessState.kt b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedErrorOnConcurrentAccessState.kt
index 04cf3c1..99640f0 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedErrorOnConcurrentAccessState.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedErrorOnConcurrentAccessState.kt
@@ -5,12 +5,23 @@ package ru.landgrafhomyak.utility.closeable_state_1
 import kotlin.contracts.ExperimentalContracts
 
 public class OwnedErrorOnConcurrentAccessState : ErrorOnConcurrentAccessState {
-	public val _owner: Any
+	private var _owner: Any?
+
+	public constructor() : super() {
+		this._owner = null
+	}
 
 	public constructor(owner: Any) : super() {
 		this._owner = owner
 	}
 
+	public var owner: Any
+		get() = this._owner ?: throw IllegalStateException("Owner not set yet")
+		set(value) {
+			if (this._owner != null) throw IllegalStateException("Owner already initialized")
+			this._owner = value
+		}
+
 	override fun throwClosed(): Nothing {
 		throw IllegalStateException("Object is closed: ${this._owner}")
 	}
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedUsagesCounter.kt b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedUsagesCounter.kt
index d320447..467534a 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedUsagesCounter.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/OwnedUsagesCounter.kt
@@ -5,12 +5,23 @@ package ru.landgrafhomyak.utility.closeable_state_1
 import kotlin.contracts.ExperimentalContracts
 
 public class OwnedUsagesCounter : UsagesCounter {
-	public val _owner: Any
+	private var _owner: Any?
+
+	public constructor() : super() {
+		this._owner = null
+	}
 
 	public constructor(owner: Any) : super() {
 		this._owner = owner
 	}
 
+	public var owner: Any
+		get() = this._owner ?: throw IllegalStateException("Owner not set yet")
+		set(value) {
+			if (this._owner != null) throw IllegalStateException("Owner already initialized")
+			this._owner = value
+		}
+
 	override fun throwClosed(): Nothing {
 		throw IllegalStateException("Object is closed: ${this._owner}")
 	}