diff --git a/platform/usageView/src/com/intellij/usages/ShowUsagesSettings.java b/platform/usageView/src/com/intellij/usages/ShowUsagesSettings.java
index d3c633dd6682..b415eedef1cb 100644
--- a/platform/usageView/src/com/intellij/usages/ShowUsagesSettings.java
+++ b/platform/usageView/src/com/intellij/usages/ShowUsagesSettings.java
@@ -1,40 +1,29 @@
 /*
  * Copyright 2000-2017 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
  */
-package com.intellij.usages;
+package com.intellij.usages
 
-import com.intellij.openapi.components.PersistentStateComponent;
-import com.intellij.openapi.components.ServiceManager;
-import com.intellij.openapi.components.State;
-import com.intellij.openapi.components.Storage;
-import com.intellij.util.xmlb.XmlSerializerUtil;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
+import com.intellij.openapi.components.PersistentStateComponent
+import com.intellij.openapi.components.ServiceManager
+import com.intellij.openapi.components.State
+import com.intellij.openapi.components.Storage
+import com.intellij.util.xmlb.XmlSerializerUtil
 
-@State(name = "ShowUsagesSettings", storages = @Storage("usageView.xml"))
-public class ShowUsagesSettings implements PersistentStateComponent<UsageViewSettings> {
-  private final UsageViewSettings myState = new UsageViewSettings();
-  
-  @Nullable
-  @Override
-  public UsageViewSettings getState() {
-    return myState;
+@State(name = "ShowUsagesSettings", storages = arrayOf(Storage("usageView.xml")))
+class ShowUsagesSettings : PersistentStateComponent<UsageViewSettings> {
+  private val myState = UsageViewSettings(false, false, false, false, false)
+
+  override fun getState(): UsageViewSettings? {
+    return myState
   }
 
-  @Override
-  public void loadState(@NotNull UsageViewSettings state) {
-    XmlSerializerUtil.copyBean(state, myState);
+  override fun loadState(state: UsageViewSettings) {
+    XmlSerializerUtil.copyBean(state, myState)
   }
 
-  public static ShowUsagesSettings getInstance() {
-    return ServiceManager.getService(ShowUsagesSettings.class);
-  }
+  companion object {
 
-  public ShowUsagesSettings() {
-    myState.setGroupByFileStructure(false);
-    myState.setGroupByModule(false);
-    myState.setGroupByPackage(false);
-    myState.setGroupByUsageType(false);
-    myState.setGroupByScope(false);
+    val instance: ShowUsagesSettings
+      get() = ServiceManager.getService(ShowUsagesSettings::class.java)
   }
 }