diff --git a/src/main/java/ru/dbotthepony/mc/otm/menu/DriveRackMenu.java b/src/main/java/ru/dbotthepony/mc/otm/menu/DriveRackMenu.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/menu/DriveRackMenu.java
rename to src/main/java/ru/dbotthepony/mc/otm/menu/DriveRackMenu.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/menu/ItemMonitorMenu.java b/src/main/java/ru/dbotthepony/mc/otm/menu/ItemMonitorMenu.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/menu/ItemMonitorMenu.java
rename to src/main/java/ru/dbotthepony/mc/otm/menu/ItemMonitorMenu.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/block/entity/BlockEntityDriveRack.java b/src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/BlockEntityDriveRack.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/block/entity/BlockEntityDriveRack.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/BlockEntityDriveRack.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/block/entity/BlockEntityItemMonitor.java b/src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/BlockEntityItemMonitor.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/block/entity/BlockEntityItemMonitor.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/block/entity/BlockEntityItemMonitor.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/capability/IStorageGridCell.java b/src/main/kotlin/ru/dbotthepony/mc/otm/graph/storage/IStorageGraphNode.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/capability/IStorageGridCell.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/graph/storage/IStorageGraphNode.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/storage/IStorageView.java b/src/main/kotlin/ru/dbotthepony/mc/otm/storage/IStorageView.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/storage/IStorageView.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/storage/IStorageView.kt
diff --git a/src/main/java/ru/dbotthepony/mc/otm/storage/ItemStackWrapper.java b/src/main/kotlin/ru/dbotthepony/mc/otm/storage/ItemStackWrapper.kt
similarity index 100%
rename from src/main/java/ru/dbotthepony/mc/otm/storage/ItemStackWrapper.java
rename to src/main/kotlin/ru/dbotthepony/mc/otm/storage/ItemStackWrapper.kt