diff --git a/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTest.java b/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTest.java
index 44689926bbae..698c24100fe3 100644
--- a/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTest.java
+++ b/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTest.java
@@ -49,7 +49,7 @@ public class TaskManagerTest extends TaskManagerTestCase {
         count.set(count.get() + 1);
       }
     };
-    myTaskManager.addTaskListener(listener, myFixture.getTestRootDisposable());
+    myTaskManager.addTaskListener(listener, getTestRootDisposable());
     LocalTask localTask = myTaskManager.createLocalTask("foo");
     myTaskManager.activateTask(localTask, false);
     assertEquals(1, count.get().intValue());
@@ -62,7 +62,7 @@ public class TaskManagerTest extends TaskManagerTestCase {
   public void testNotifications() {
 
     final Ref<Notification> notificationRef = new Ref<>();
-    getProject().getMessageBus().connect(myFixture.getTestRootDisposable()).subscribe(Notifications.TOPIC, new NotificationsAdapter() {
+    getProject().getMessageBus().connect(getTestRootDisposable()).subscribe(Notifications.TOPIC, new NotificationsAdapter() {
       @Override
       public void notify(@NotNull Notification notification) {
         notificationRef.set(notification);
diff --git a/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTestCase.java b/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTestCase.java
index 775b965c55f5..15f89df5f57e 100644
--- a/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTestCase.java
+++ b/plugins/tasks/tasks-tests/test/com/intellij/tasks/TaskManagerTestCase.java
@@ -17,7 +17,7 @@ package com.intellij.tasks;
 
 import com.intellij.openapi.util.Couple;
 import com.intellij.tasks.impl.TaskManagerImpl;
-import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase;
+import com.intellij.testFramework.LightPlatformTestCase;
 import org.jetbrains.annotations.NotNull;
 
 import java.text.SimpleDateFormat;
@@ -28,7 +28,7 @@ import java.util.TimeZone;
 /**
  * @author Dmitry Avdeev
  */
-public abstract class TaskManagerTestCase extends LightCodeInsightFixtureTestCase {
+public abstract class TaskManagerTestCase extends LightPlatformTestCase {
   protected static final SimpleDateFormat SHORT_TIMESTAMP_FORMAT = new SimpleDateFormat("yyyy-MM-dd HH:mm");
   static {
     SHORT_TIMESTAMP_FORMAT.setTimeZone(TimeZone.getTimeZone("UTC"));