diff --git a/platform/projectModel-api/src/com/intellij/openapi/roots/JavaModuleExternalPaths.java b/platform/projectModel-api/src/com/intellij/openapi/roots/JavaModuleExternalPaths.java
index ee4cb9895f52..fa43700adc94 100644
--- a/platform/projectModel-api/src/com/intellij/openapi/roots/JavaModuleExternalPaths.java
+++ b/platform/projectModel-api/src/com/intellij/openapi/roots/JavaModuleExternalPaths.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2000-2012 JetBrains s.r.o.
+ * Copyright 2000-2017 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.
@@ -22,7 +22,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * @author nik
  */
-public abstract class JavaModuleExternalPaths extends ModuleExtension<JavaModuleExternalPaths> {
+public abstract class JavaModuleExternalPaths extends ModuleExtension {
 
   public static JavaModuleExternalPaths getInstance(Module module) {
     return ModuleRootManager.getInstance(module).getModuleExtension(JavaModuleExternalPaths.class);
diff --git a/platform/projectModel-api/src/com/intellij/openapi/roots/ModuleExtension.java b/platform/projectModel-api/src/com/intellij/openapi/roots/ModuleExtension.java
index 713b2b5c08e6..443c198cb360 100644
--- a/platform/projectModel-api/src/com/intellij/openapi/roots/ModuleExtension.java
+++ b/platform/projectModel-api/src/com/intellij/openapi/roots/ModuleExtension.java
@@ -28,7 +28,7 @@ import org.jetbrains.annotations.NotNull;
 /**
  * Implement {@link com.intellij.openapi.components.PersistentStateComponent} to be serializable.
  */
-public abstract class ModuleExtension<T extends ModuleExtension> implements Disposable, Comparable<ModuleExtension> {
+public abstract class ModuleExtension implements Disposable, Comparable<ModuleExtension> {
   public static final ExtensionPointName<ModuleExtension> EP_NAME = ExtensionPointName.create("com.intellij.moduleExtension");
 
   /**
diff --git a/plugins/maven/src/main/java/org/jetbrains/idea/maven/importing/MavenSourceFoldersModuleExtension.java b/plugins/maven/src/main/java/org/jetbrains/idea/maven/importing/MavenSourceFoldersModuleExtension.java
index e9475b476cea..53ea0147f846 100644
--- a/plugins/maven/src/main/java/org/jetbrains/idea/maven/importing/MavenSourceFoldersModuleExtension.java
+++ b/plugins/maven/src/main/java/org/jetbrains/idea/maven/importing/MavenSourceFoldersModuleExtension.java
@@ -47,7 +47,7 @@ import java.util.*;
  * @author Vladislav.Soroka
  * @since 4/30/2014
  */
-public class MavenSourceFoldersModuleExtension extends ModuleExtension<MavenSourceFoldersModuleExtension> {
+public class MavenSourceFoldersModuleExtension extends ModuleExtension {
 
   private ModifiableRootModel myRootModel;
   private JpsModule myDummyJpsModule;