diff --git a/core/descriptor.loader.java/src/org/jetbrains/kotlin/load/kotlin/KotlinJvmBinaryClass.java b/core/descriptor.loader.java/src/org/jetbrains/kotlin/load/kotlin/KotlinJvmBinaryClass.kt
similarity index 100%
rename from core/descriptor.loader.java/src/org/jetbrains/kotlin/load/kotlin/KotlinJvmBinaryClass.java
rename to core/descriptor.loader.java/src/org/jetbrains/kotlin/load/kotlin/KotlinJvmBinaryClass.kt
diff --git a/core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/AnnotationAndConstantLoader.java b/core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/AnnotationAndConstantLoader.kt
similarity index 100%
rename from core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/AnnotationAndConstantLoader.java
rename to core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/AnnotationAndConstantLoader.kt