diff --git a/build.gradle.kts b/build.gradle.kts
index 0cd5e51..aa5fcf6 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -15,7 +15,7 @@ buildscript {
 }
 
 group = "ru.landgrafhomyak.utility"
-version = "0.4.4"
+version = "0.4.5"
 
 repositories {
 	mavenCentral()
@@ -25,6 +25,8 @@ xomrk {
 	kotlin {
 		setCompatibilityWithKotlin(KotlinVersion.KOTLIN_2_0)
 		optInContracts()
+		noWarnExpectActual()
+		warningsAsErrors()
 
 		defineAllMultiplatformTargets()
 
@@ -46,24 +48,34 @@ xomrk {
 		}
 
 		sourceSets {
-			commonMain {
+			val commonMain by getting {
 				dependencies {
 					compileOnly(kotlin("stdlib"))
 				}
 			}
-			jvmMain {
+			val jvmMain by getting {
 				dependencies {
 					compileOnly(kotlin("stdlib"))
 				}
 			}
 
-			sourceSets.configureEach {
-				if (name == "jvmMain") return@configureEach
-				 if (name == "commonMain") return@configureEach
+			val nonJvmMain by creating {
+				dependsOn(commonMain)
 				dependencies {
 					implementation(kotlin("stdlib"))
 				}
 			}
+
+			sourceSets.configureEach {
+				when {
+					// commonMain !in dependsOn -> return@configureEach
+					!name.endsWith("Main") -> return@configureEach
+					this@configureEach === commonMain -> return@configureEach
+					this@configureEach === jvmMain -> return@configureEach
+					this@configureEach === nonJvmMain -> return@configureEach
+				}
+				dependsOn(nonJvmMain)
+			}
 		}
 	}
 
diff --git a/gradle.properties b/gradle.properties
index bf7d93b..ef6aa44 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,2 +1,3 @@
 kotlin.code.style=official
 kotlin.stdlib.default.dependency=false
+kotlin.mpp.applyDefaultHierarchyTemplate=false
\ No newline at end of file
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt b/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt
new file mode 100644
index 0000000..7a472ba
--- /dev/null
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt
@@ -0,0 +1,7 @@
+package ru.landgrafhomyak.utility.highlevel_try_finally
+
+@PublishedApi
+internal expect object ExceptionsKt {
+	@PublishedApi
+	internal fun addSuppressed(e1: Throwable?, e2: Throwable?)
+}
\ No newline at end of file
diff --git a/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/safe_autoclose.kt b/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/safe_autoclose.kt
index 048ae74..024ee8b 100644
--- a/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/safe_autoclose.kt
+++ b/src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/safe_autoclose.kt
@@ -86,7 +86,7 @@ inline fun <R> safeAutoClose3e(
 		try {
 			onError(e1)
 		} catch (e2: Throwable) {
-			e1.addSuppressed(e2)
+			ExceptionsKt.addSuppressed(e1, e2)
 		}
 		throw e1
 	} finally {
diff --git a/src/jvmMain/java/kotlin/ExceptionsKt.kt b/src/jvmMain/java/kotlin/ExceptionsKt.kt
deleted file mode 100644
index 8484776..0000000
--- a/src/jvmMain/java/kotlin/ExceptionsKt.kt
+++ /dev/null
@@ -1,13 +0,0 @@
-package kotlin
-
-import java.util.Objects
-
-@PublishedApi
-internal object ExceptionsKt {
-	@Suppress("RemoveRedundantQualifierName")
-	@JvmStatic
-	@PublishedApi
-	internal fun addSuppressed(`this`: kotlin.Throwable, e2: kotlin.Throwable?) {
-		(java.lang.Throwable::addSuppressed)(`this` as java.lang.Throwable, e2)
-	}
-}
diff --git a/src/jvmMain/java/kotlin/jvm/internal/Intrinsics.kt b/src/jvmMain/java/kotlin/jvm/internal/Intrinsics.kt
deleted file mode 100644
index ffb223c..0000000
--- a/src/jvmMain/java/kotlin/jvm/internal/Intrinsics.kt
+++ /dev/null
@@ -1,11 +0,0 @@
-package kotlin.jvm.internal
-
-@PublishedApi
-internal object Intrinsics {
-	@PublishedApi
-	@JvmStatic
-	internal fun checkNotNullParameter(expr: java.lang.Object?, name: String?) {
-		if (expr == null)
-			throw java.lang.NullPointerException(name)
-	}
-}
\ No newline at end of file
diff --git a/src/jvmMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt b/src/jvmMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt
new file mode 100644
index 0000000..9279da7
--- /dev/null
+++ b/src/jvmMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt
@@ -0,0 +1,11 @@
+package ru.landgrafhomyak.utility.highlevel_try_finally
+
+@PublishedApi
+internal actual object ExceptionsKt {
+	@PublishedApi
+	internal actual fun addSuppressed(e1: Throwable?, e2: Throwable?) {
+		if (e1 == null) throw NullPointerException("e1")
+		if (e2 == null) throw NullPointerException("e2")
+		(java.lang.Throwable::addSuppressed)(e1 as java.lang.Throwable, e2)
+	}
+}
\ No newline at end of file
diff --git a/src/nonJvmMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt b/src/nonJvmMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt
new file mode 100644
index 0000000..0dc8d17
--- /dev/null
+++ b/src/nonJvmMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/ExceptionsKt.kt
@@ -0,0 +1,11 @@
+package ru.landgrafhomyak.utility.highlevel_try_finally
+
+import kotlin.addSuppressed as kotlinAddSuppressed
+
+@PublishedApi
+internal actual object ExceptionsKt {
+	@PublishedApi
+	internal actual fun addSuppressed(e1: Throwable?, e2: Throwable?) {
+		e1!!.kotlinAddSuppressed(e2!!)
+	}
+}
\ No newline at end of file