diff --git a/plugins/pill/pill-importer/src/JpsCompatiblePluginTasks.kt b/plugins/pill/pill-importer/src/JpsCompatiblePluginTasks.kt
index 5741005b35b..91cf3016245 100644
--- a/plugins/pill/pill-importer/src/JpsCompatiblePluginTasks.kt
+++ b/plugins/pill/pill-importer/src/JpsCompatiblePluginTasks.kt
@@ -70,6 +70,8 @@ class JpsCompatiblePluginTasks(
             Regex("kotlin_test_wasm_js_[\\d_]+_SNAPSHOT\\.xml"),
             Regex("kotlin_dom_api_compat_[\\d_]+_SNAPSHOT\\.xml")
         )
+
+        private val EXCLUDED_DIRECTORY_PATHS = listOf("out")
     }
 
     private lateinit var projectDir: File
@@ -92,7 +94,8 @@ class JpsCompatiblePluginTasks(
         rootProject.logger.lifecycle("Pill: Setting up project...")
 
         val modulePrefix = System.getProperty("pill.module.prefix", "")
-        val modelParser = ModelParser(modulePrefix)
+        val globalExcludedDirectories = EXCLUDED_DIRECTORY_PATHS.map { File(rootProject.projectDir, it) }
+        val modelParser = ModelParser(modulePrefix, globalExcludedDirectories)
 
         val dependencyPatcher = DependencyPatcher(rootProject)
         val dependencyMappers = listOf(dependencyPatcher, ::attachPlatformSources, ::attachAsmSources)
diff --git a/plugins/pill/pill-importer/src/ModelParser.kt b/plugins/pill/pill-importer/src/ModelParser.kt
index 5e93dccba5a..743746851de 100644
--- a/plugins/pill/pill-importer/src/ModelParser.kt
+++ b/plugins/pill/pill-importer/src/ModelParser.kt
@@ -32,7 +32,7 @@ import java.util.*
 typealias OutputDir = String
 typealias GradleProjectPath = String
 
-class ModelParser(private val modulePrefix: String) {
+class ModelParser(private val modulePrefix: String, private val globalExcludedDirectories: List<File>) {
     fun parse(project: Project): PProject {
         if (project != project.rootProject) {
             error("$project is not a root project")
@@ -182,7 +182,7 @@ class ModelParser(private val modulePrefix: String) {
             forTests = false,
             rootDirectory = project.projectDir,
             moduleFile = mainModuleFileRelativePath,
-            contentRoots = listOf(PContentRoot(project.projectDir, listOf(), getExcludedDirs(project, excludedProjects))),
+            contentRoots = listOf(PContentRoot(project.projectDir, listOf(), computeAllExcludedDirectories(project, excludedProjects))),
             orderRoots = emptyList(),
             javaLanguageVersion = null,
             kotlinOptions = null,
@@ -199,14 +199,13 @@ class ModelParser(private val modulePrefix: String) {
         return javaToolchainService.launcherFor(javaPluginExtension.toolchain).orNull?.metadata?.languageVersion?.asInt()
     }
 
-    private fun getExcludedDirs(project: Project, excludedProjects: List<Project>): List<File> {
-        fun getJavaExcludedDirs() = project.plugins.findPlugin(IdeaPlugin::class.java)
-            ?.model?.module?.excludeDirs?.toList() ?: emptyList()
+    private fun computeAllExcludedDirectories(project: Project, excludedProjects: List<Project>): List<File> {
+        val javaExcludedDirectories = project.plugins.findPlugin(IdeaPlugin::class.java)
+            ?.model?.module?.excludeDirs?.toList().orEmpty()
 
-        fun getPillExcludedDirs() = project.findPillExtensionMirror()?.excludedDirs ?: emptyList()
+        val excludedProjectDirectories = if (project == project.rootProject) excludedProjects.map { it.buildDir } else emptyList()
 
-        return getPillExcludedDirs() + getJavaExcludedDirs() + project.buildDir +
-                (if (project == project.rootProject) excludedProjects.map { it.buildDir } else emptyList())
+        return globalExcludedDirectories + javaExcludedDirectories + project.buildDir + excludedProjectDirectories
     }
 
     private fun parseSourceSets(project: Project): List<PSourceSet> {
diff --git a/plugins/pill/pill-importer/src/PillExtensionMirror.kt b/plugins/pill/pill-importer/src/PillExtensionMirror.kt
deleted file mode 100644
index 436c73bab8e..00000000000
--- a/plugins/pill/pill-importer/src/PillExtensionMirror.kt
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.pill
-
-import java.io.File
-import org.gradle.api.Project
-
-open class PillExtensionMirror(val excludedDirs: List<File>)
-
-fun Project.findPillExtensionMirror(): PillExtensionMirror? {
-    val ext = extensions.findByName("pill") ?: return null
-
-    @Suppress("UNCHECKED_CAST")
-    val serialized = ext::class.java.getMethod("serialize").invoke(ext) as Map<String, Any>
-
-    @Suppress("UNCHECKED_CAST")
-    val excludedDirs = serialized["excludedDirs"] as List<File>
-
-    return PillExtensionMirror(excludedDirs)
-}
\ No newline at end of file