diff --git a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractIncrementalJpsTest.kt b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractIncrementalJpsTest.kt
index ee8f831d880..3574f8e9df4 100644
--- a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractIncrementalJpsTest.kt
+++ b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractIncrementalJpsTest.kt
@@ -15,6 +15,7 @@
  */
 
 package org.jetbrains.kotlin.jps.build
+
 import com.intellij.openapi.Disposable
 import com.intellij.openapi.util.Disposer
 import com.intellij.openapi.util.io.FileUtil
@@ -101,6 +102,7 @@ abstract class AbstractIncrementalJpsTest(
     protected lateinit var workDir: File
     protected lateinit var projectDescriptor: ProjectDescriptor
     protected lateinit var additionalCommandLineArguments: List<String>
+
     // is used to compare lookup dumps in a human readable way (lookup symbols are hashed in an actual lookup storage)
     protected lateinit var lookupsDuringTest: MutableSet<LookupSymbol>
     private var isJvmICEnabledBackup: Boolean = false
@@ -150,6 +152,8 @@ abstract class AbstractIncrementalJpsTest(
         if (DEBUG_LOGGING_ENABLED) {
             enableDebugLogging()
         }
+        System.getProperties()
+            .setProperty("kotlin.jps.classPrefixesToLoadByParent", "kotlin.") // for debugging tests with in-process compiler
     }
 
     override fun tearDown() {
@@ -402,7 +406,7 @@ abstract class AbstractIncrementalJpsTest(
     // null means one module
     private fun configureModules(): ModulesTxt? {
         JpsJavaExtensionService.getInstance().getOrCreateProjectExtension(myProject).outputUrl =
-                JpsPathUtil.pathToUrl(getAbsolutePath("out"))
+            JpsPathUtil.pathToUrl(getAbsolutePath("out"))
 
         val jdk = addJdk("my jdk")
         val modulesTxt = readModulesTxt()
diff --git a/jps/jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt b/jps/jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt
index ee26bf8d919..3c3e8399041 100644
--- a/jps/jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt
+++ b/jps/jps-plugin/src/org/jetbrains/kotlin/jps/build/KotlinBuilder.kt
@@ -71,17 +71,32 @@ class KotlinBuilder : ModuleLevelBuilder(BuilderCategory.SOURCE_PROCESSOR) {
         const val SKIP_CACHE_VERSION_CHECK_PROPERTY = "kotlin.jps.skip.cache.version.check"
         const val JPS_KOTLIN_HOME_PROPERTY = "jps.kotlin.home"
 
+        private val classesToLoadByParentFromRegistry =
+            System.getProperty("kotlin.jps.classesToLoadByParent")?.split(',')?.map { it.trim() } ?: emptyList()
+        private val classPrefixesToLoadByParentFromRegistry =
+            System.getProperty("kotlin.jps.classPrefixesToLoadByParent")?.split(',')?.map { it.trim() } ?: emptyList()
+
         val classesToLoadByParent: ClassCondition
             get() = ClassCondition { className ->
-                className.startsWith("org.jetbrains.kotlin.load.kotlin.incremental.components.")
-                        || className.startsWith("org.jetbrains.kotlin.incremental.components.")
-                        || className.startsWith("org.jetbrains.kotlin.incremental.js")
-                        || className == "org.jetbrains.kotlin.config.Services"
-                        || className.startsWith("org.apache.log4j.") // For logging from compiler
-                        || className == "org.jetbrains.kotlin.progress.CompilationCanceledStatus"
-                        || className == "org.jetbrains.kotlin.progress.CompilationCanceledException"
-                        || className == "org.jetbrains.kotlin.modules.TargetId"
-                        || className == "org.jetbrains.kotlin.cli.common.ExitCode"
+                val prefixes = listOf(
+                    "org.apache.log4j.", // For logging from compiler
+                    "org.jetbrains.kotlin.incremental.components.",
+                    "org.jetbrains.kotlin.incremental.js",
+                    "org.jetbrains.kotlin.load.kotlin.incremental.components."
+                ) + classPrefixesToLoadByParentFromRegistry
+
+                val classes = listOf(
+                    "org.jetbrains.kotlin.config.Services",
+                    "org.jetbrains.kotlin.progress.CompilationCanceledStatus",
+                    "org.jetbrains.kotlin.progress.CompilationCanceledException",
+                    "org.jetbrains.kotlin.modules.TargetId",
+                    "org.jetbrains.kotlin.cli.common.ExitCode"
+                ) + classesToLoadByParentFromRegistry
+
+                prefixes.forEach { if (className.startsWith(it)) return@ClassCondition true }
+                classes.forEach { if (className == it) return@ClassCondition true }
+
+                return@ClassCondition false
             }
     }