diff --git a/ExtendedApi/src/com/intellij/testFramework/IdeaTestCase.java b/ExtendedApi/src/com/intellij/testFramework/IdeaTestCase.java
index 379277819168..abd34841596e 100644
--- a/ExtendedApi/src/com/intellij/testFramework/IdeaTestCase.java
+++ b/ExtendedApi/src/com/intellij/testFramework/IdeaTestCase.java
@@ -88,8 +88,8 @@ public abstract class IdeaTestCase extends TestCase implements DataProvider {
     ourApplication = IdeaTestApplication.getInstance();
     ourApplication.setDataProvider(this);
     if (Extensions.getAllAreas().length < 2) {
-      Extensions.registerAreaClass("PROJECT", null);
-      Extensions.registerAreaClass("MODULE", "PROJECT");
+      Extensions.registerAreaClass("IDEA_PROJECT", null);
+      Extensions.registerAreaClass("IDEA_MODULE", "IDEA_PROJECT");
     }
   }
 
diff --git a/ExtendedApi/src/com/intellij/testFramework/LightIdeaTestCase.java b/ExtendedApi/src/com/intellij/testFramework/LightIdeaTestCase.java
index 99feba6e04e0..b9b670aaeeef 100644
--- a/ExtendedApi/src/com/intellij/testFramework/LightIdeaTestCase.java
+++ b/ExtendedApi/src/com/intellij/testFramework/LightIdeaTestCase.java
@@ -87,8 +87,8 @@ public class LightIdeaTestCase extends TestCase implements DataProvider {
     ourApplication = IdeaTestApplication.getInstance();
     ourApplication.setDataProvider(this);
     if (Extensions.getAllAreas().length < 2) {
-      Extensions.registerAreaClass("PROJECT", null);
-      Extensions.registerAreaClass("MODULE", "PROJECT");
+      Extensions.registerAreaClass("IDEA_PROJECT", null);
+      Extensions.registerAreaClass("IDEA_MODULE", "IDEA_PROJECT");
     }
     cleanupApplicationCaches();
   }