diff --git a/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt b/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt
index 0f3438c..83155ef 100644
--- a/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt
+++ b/kopy-gradle-plugin/testFunctional/kotlin/com/javiersc/kotlin/kopy/gradle/plugin/KopyGradlePluginTest.kt
@@ -7,7 +7,7 @@ import org.junit.jupiter.api.Test
 internal class KopyGradlePluginTest : GradleTestKitTest() {
 
     @Test
-    fun `kotlin multiplatform empty`() = gradleTestKitTest("kotlin-multiplatform-empty") {
+    fun `kotlin multiplatform`() = gradleTestKitTest("kotlin-multiplatform") {
         gradlew("assemble").output.shouldContain("BUILD SUCCESSFUL")
     }
 
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/build.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/build.gradle.kts
similarity index 59%
rename from kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/build.gradle.kts
rename to kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/build.gradle.kts
index 54627c1..6f38e53 100644
--- a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/build.gradle.kts
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/build.gradle.kts
@@ -1,11 +1,14 @@
 plugins {
     id("com.javiersc.kotlin.kopy")
     id("org.jetbrains.kotlin.multiplatform")
+    id("org.jetbrains.kotlin.plugin.atomicfu")
 }
 
 kotlin {
+    jvm()
     linuxArm64()
-    linuxX64()
+    macosArm64()
+    mingwX64()
 }
 
 kopy {
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/gradle.properties b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/gradle.properties
new file mode 100644
index 0000000..f87ab19
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/gradle.properties
@@ -0,0 +1,3 @@
+kotlinx.atomicfu.enableJvmIrTransformation=true
+kotlinx.atomicfu.enableJsIrTransformation=true
+kotlinx.atomicfu.enableNativeIrTransformations=true
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/settings.gradle.kts b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/settings.gradle.kts
similarity index 93%
rename from kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/settings.gradle.kts
rename to kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/settings.gradle.kts
index f23f154..0218724 100644
--- a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform-empty/settings.gradle.kts
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/settings.gradle.kts
@@ -24,3 +24,8 @@ dependencyResolutionManagement {
         }
     }
 }
+
+include(
+    ":lib-a",
+    // ":lib-b",
+)
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/src/main/kotlin/A.kt b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/src/main/kotlin/A.kt
new file mode 100644
index 0000000..3fba6dd
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-multiplatform/src/main/kotlin/A.kt
@@ -0,0 +1,18 @@
+package com.javiersc.kotlin.kopy.functional.test.lib.a
+
+import com.javiersc.kotlin.kopy.Kopy
+
+fun a() {
+    val house = House(
+        squareMeters = 53,
+        kitchen = Kitchen(
+            squareMeters = 10,
+        ),
+    )
+    house.copy {
+        kitchen.squareMeters = 77
+    }
+}
+
+@Kopy data class House(val squareMeters: Int, val kitchen: Kitchen)
+@Kopy data class Kitchen(val squareMeters: Int)
diff --git a/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/gradle.properties b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/gradle.properties
new file mode 100644
index 0000000..f87ab19
--- /dev/null
+++ b/kopy-gradle-plugin/testFunctional/resources/kotlin-plugin-atomicfu/gradle.properties
@@ -0,0 +1,3 @@
+kotlinx.atomicfu.enableJvmIrTransformation=true
+kotlinx.atomicfu.enableJsIrTransformation=true
+kotlinx.atomicfu.enableNativeIrTransformations=true