diff --git a/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java b/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java
index 08918a37814d..1ff4800836a0 100644
--- a/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java
+++ b/platform/testFramework/src/com/intellij/testFramework/PlatformTestCase.java
@@ -635,7 +635,7 @@ public abstract class PlatformTestCase extends UsefulTestCase implements DataPro
   }
 
   public static void initPlatformLangPrefix() {
-    initPlatformPrefix("com.intellij.openapi.components.impl.stores.IdeaProjectStoreImpl", "PlatformLangXml");
+    initPlatformPrefix(IDEA_MARKER_CLASS, "PlatformLangXml");
   }
 
   protected static void initPlatformPrefix(String classToTest, String prefix) {
diff --git a/platform/testFramework/src/com/intellij/testFramework/UsefulTestCase.java b/platform/testFramework/src/com/intellij/testFramework/UsefulTestCase.java
index c24be5314363..71e3bbc3c7a6 100644
--- a/platform/testFramework/src/com/intellij/testFramework/UsefulTestCase.java
+++ b/platform/testFramework/src/com/intellij/testFramework/UsefulTestCase.java
@@ -64,6 +64,7 @@ public abstract class UsefulTestCase extends TestCase {
   private static final String DEFAULT_SETTINGS_EXTERNALIZED;
   private static final Random PRNG = new SecureRandom();
   private static final String ORIGINAL_TEMP_DIR = FileUtil.getTempDirectory();
+  public static final String IDEA_MARKER_CLASS = "com.intellij.openapi.components.impl.stores.IdeaProjectStoreImpl";
 
   protected final Disposable myTestRootDisposable = Disposer.newDisposable();
   private CodeStyleSettings myOldCodeStyleSettings;