diff --git a/platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/DirectoryIndexBeneathTest.java b/platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/DirectoryIndexBeneathTest.kt
similarity index 100%
rename from platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/DirectoryIndexBeneathTest.java
rename to platform/platform-tests/testSrc/com/intellij/openapi/roots/impl/DirectoryIndexBeneathTest.kt