diff --git a/core/descriptors.runtime/build.gradle.kts b/core/descriptors.runtime/build.gradle.kts
index ff01d6e1deb..e6bb6e38327 100644
--- a/core/descriptors.runtime/build.gradle.kts
+++ b/core/descriptors.runtime/build.gradle.kts
@@ -24,15 +24,8 @@ sourceSets {
     "test" { projectDefault() }
 }
 
-val compileJava by tasks.getting(JavaCompile::class) {
-    sourceCompatibility = "1.6"
-    targetCompatibility = "1.6"
-}
-
-val compileKotlin by tasks.getting(KotlinCompile::class) {
-    kotlinOptions.jvmTarget = "1.6"
-    kotlinOptions.jdkHome = rootProject.extra["JDK_16"] as String
-}
+jvmTarget = "1.6"
+javaHome = rootProject.extra["JDK_16"] as String
 
 val generateTests by generator("org.jetbrains.kotlin.generators.tests.GenerateRuntimeDescriptorTestsKt")