diff --git a/kotlin-native/backend.native/tests/samples/build.gradle.kts b/kotlin-native/backend.native/tests/samples/build.gradle.kts
index 26b36167004..31922ea7a69 100644
--- a/kotlin-native/backend.native/tests/samples/build.gradle.kts
+++ b/kotlin-native/backend.native/tests/samples/build.gradle.kts
@@ -23,7 +23,8 @@ allprojects {
     tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinNativeCompile>().configureEach {
         compilerOptions.freeCompilerArgs.addAll(
                 "-XXLanguage:+ImplicitSignedToUnsignedIntegerConversion",
-                "-opt-in=kotlinx.cinterop.ExperimentalForeignApi"
+                "-opt-in=kotlinx.cinterop.ExperimentalForeignApi",
+                "-opt-in=kotlin.experimental.ExperimentalNativeApi"
         )
     }
 }