diff --git a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/bothJdkClasspathPatcher.kt b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/bothJdkClasspathPatcher.kt
deleted file mode 100644
index e140c09dd56..00000000000
--- a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/bothJdkClasspathPatcher.kt
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright 2010-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.jps
-
-import org.jetbrains.jps.javac.OptimizedFileManagerUtil
-import java.lang.reflect.Field
-import java.lang.reflect.Modifier
-
-fun disableJava6FileManager() {
-    val fileManagerClass = OptimizedFileManagerUtil.getManagerClass()
-    if (fileManagerClass?.simpleName == "OptimizedFileManager") {
-        // JPS tests depends on idea.jar and can't be executed under Java 1.6 anymore. But currently TeamCity merges classpath from all
-        // dependencies in a one big mess with no differences between JDK and non-JDK jars. Such behaviour causes both
-        // JDK 8 and JDK 6 classes present in classpath. Next there's ClasspathBootstrap.OptimizedFileManagerClassHolder in idea
-        // that works through reflection and tries to choose correct FileManager that are not the same in JDK 6 and JDK 8. Choosing
-        // FileManager for JDK 6 leads to exceptions on Runtime as classes from JDK 8 goes first on teamcity.
-        //
-        // Here we disable JDK 6 FileManager with brute force.
-        val clazz = Class.forName("org.jetbrains.jps.cmdline.ClasspathBootstrap\$OptimizedFileManagerClassHolder")
-        setFinalStaticToNull(clazz.getDeclaredField("managerClass"))
-        setFinalStaticToNull(clazz.getDeclaredField("directoryCacheClearMethod"))
-    }
-}
-
-private fun setFinalStaticToNull(field: Field) {
-    field.isAccessible = true
-
-    val modifiersField = (Field::class.java).getDeclaredField("modifiers")
-    modifiersField.isAccessible = true
-    modifiersField.setInt(field, field.modifiers and Modifier.FINAL.inv())
-
-    field.set(null, null)
-}
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 f033d78cdbf..b07c9630996 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
@@ -47,7 +47,6 @@ import org.jetbrains.kotlin.incremental.CacheVersion
 import org.jetbrains.kotlin.incremental.LookupSymbol
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.incremental.testingUtils.*
-import org.jetbrains.kotlin.jps.disableJava6FileManager
 import org.jetbrains.kotlin.jps.incremental.JpsLookupStorageProvider
 import org.jetbrains.kotlin.jps.incremental.KotlinDataContainerTarget
 import org.jetbrains.kotlin.jps.incremental.getKotlinCache
@@ -64,10 +63,6 @@ abstract class AbstractIncrementalJpsTest(
         private val allowNoBuildLogFileInTestData: Boolean = false
 ) : BaseKotlinJpsBuildTestCase() {
     companion object {
-        init {
-            disableJava6FileManager()
-        }
-
         private val COMPILATION_FAILED = "COMPILATION FAILED"
 
         // change to "/tmp" or anything when default is too long (for easier debugging)
diff --git a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractKotlinJpsBuildTestCase.java b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractKotlinJpsBuildTestCase.java
index 474836e87d2..64001e55a56 100644
--- a/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractKotlinJpsBuildTestCase.java
+++ b/jps/jps-plugin/jps-tests/test/org/jetbrains/kotlin/jps/build/AbstractKotlinJpsBuildTestCase.java
@@ -32,7 +32,6 @@ import org.jetbrains.jps.model.library.sdk.JpsSdk;
 import org.jetbrains.jps.model.module.JpsModule;
 import org.jetbrains.jps.util.JpsPathUtil;
 import org.jetbrains.kotlin.codegen.forTestCompile.ForTestCompileRuntime;
-import org.jetbrains.kotlin.jps.BothJdkClasspathPatcherKt;
 import org.jetbrains.kotlin.utils.PathUtil;
 
 import java.io.File;
@@ -42,10 +41,6 @@ import java.util.Collection;
 public abstract class AbstractKotlinJpsBuildTestCase extends BaseKotlinJpsBuildTestCase {
     public static final String TEST_DATA_PATH = "jps-plugin/testData/";
 
-    static {
-        BothJdkClasspathPatcherKt.disableJava6FileManager();
-    }
-
     protected File workDir;
 
     protected static File copyTestDataToTmpDir(File testDataDir) throws IOException {