diff --git a/src/main/java/ru/dbotthepony/mc/otm/client/screen/ItemMonitorScreen.java b/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/ItemMonitorScreen.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/client/screen/ItemMonitorScreen.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/ItemMonitorScreen.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/client/screen/panels/AbstractSlotPanel.java b/src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/AbstractSlotPanel.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/client/screen/panels/AbstractSlotPanel.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/client/screen/panels/AbstractSlotPanel.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/menu/PoweredMatteryMenu.java b/src/main/kotlin/ru/dbotthepony/mc/otm/menu/PoweredMatteryMenu.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/menu/PoweredMatteryMenu.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/menu/PoweredMatteryMenu.kt