diff --git a/compiler/backend-common/src/org/jetbrains/kotlin/backend/common/CodegenUtil.java b/compiler/backend-common/src/org/jetbrains/kotlin/backend/common/CodegenUtil.kt
similarity index 100%
rename from compiler/backend-common/src/org/jetbrains/kotlin/backend/common/CodegenUtil.java
rename to compiler/backend-common/src/org/jetbrains/kotlin/backend/common/CodegenUtil.kt
diff --git a/compiler/backend-common/src/org/jetbrains/kotlin/backend/common/DataClassMethodGenerator.java b/compiler/backend-common/src/org/jetbrains/kotlin/backend/common/DataClassMethodGenerator.kt
similarity index 100%
rename from compiler/backend-common/src/org/jetbrains/kotlin/backend/common/DataClassMethodGenerator.java
rename to compiler/backend-common/src/org/jetbrains/kotlin/backend/common/DataClassMethodGenerator.kt