diff --git a/platform/testFramework/src/com/intellij/testFramework/LightPlatformTestCase.java b/platform/testFramework/src/com/intellij/testFramework/LightPlatformTestCase.java
index b2b0270d256c..51ffa5a7f318 100644
--- a/platform/testFramework/src/com/intellij/testFramework/LightPlatformTestCase.java
+++ b/platform/testFramework/src/com/intellij/testFramework/LightPlatformTestCase.java
@@ -780,7 +780,6 @@ public abstract class LightPlatformTestCase extends UsefulTestCase implements Da
   public static synchronized void closeAndDeleteProject() {
     if (ourProject != null) {
       ApplicationManager.getApplication().assertWriteAccessAllowed();
-      ourApplication.setDataProvider(null);
 
       ((ProjectImpl)ourProject).setTemporarilyDisposed(false);
       VirtualFile projectFile = ((ProjectEx)ourProject).getStateStore().getProjectFile();