diff --git a/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_12_2.kt b/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_12_2.kt
index 65c5e5ace..b31644e57 100644
--- a/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_12_2.kt
+++ b/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_12_2.kt
@@ -13,7 +13,19 @@
 
 package de.bixilon.minosoft.data.registries.versions.registries.legacy
 
+import de.bixilon.minosoft.data.entities.entities.Entity
+import de.bixilon.minosoft.data.entities.entities.item.ItemEntity
+import de.bixilon.minosoft.data.entities.entities.player.PlayerEntity
+import org.testng.Assert.assertEquals
 import org.testng.annotations.Test
 
 @Test(groups = ["pixlyzer"], dependsOnGroups = ["version"], priority = Int.MAX_VALUE, timeOut = 15000L)
-class `1_12_2` : LegacyLoadingTest("1.12.2")
+class `1_12_2` : LegacyLoadingTest("1.12.2") {
+
+    fun `entity data`() {
+        assertEquals(registries.getEntityDataIndex(Entity.FLAGS_DATA), 0)
+        assertEquals(registries.getEntityDataIndex(ItemEntity.ITEM_DATA), 6)
+        assertEquals(registries.getEntityDataIndex(PlayerEntity.SKIN_PARTS_DATA), 13)
+    }
+
+}
diff --git a/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_8_9.kt b/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_8_9.kt
index db5318b2b..66771aa76 100644
--- a/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_8_9.kt
+++ b/src/integration-test/kotlin/de/bixilon/minosoft/data/registries/versions/registries/legacy/1_8_9.kt
@@ -13,7 +13,18 @@
 
 package de.bixilon.minosoft.data.registries.versions.registries.legacy
 
+import de.bixilon.minosoft.data.entities.entities.Entity
+import de.bixilon.minosoft.data.entities.entities.item.ItemEntity
+import de.bixilon.minosoft.data.entities.entities.player.PlayerEntity
+import org.testng.Assert.assertEquals
 import org.testng.annotations.Test
 
 @Test(groups = ["pixlyzer"], dependsOnGroups = ["version"], priority = Int.MAX_VALUE, timeOut = 15000L)
-class `1_8_9` : LegacyLoadingTest("1.8.9")
+class `1_8_9` : LegacyLoadingTest("1.8.9") {
+
+    fun `entity data`() {
+        assertEquals(registries.getEntityDataIndex(Entity.FLAGS_DATA), 0)
+        assertEquals(registries.getEntityDataIndex(ItemEntity.ITEM_DATA), 10)
+        assertEquals(registries.getEntityDataIndex(PlayerEntity.SKIN_PARTS_DATA), 10)
+    }
+}
diff --git a/src/main/java/de/bixilon/minosoft/data/entities/entities/item/ItemEntity.kt b/src/main/java/de/bixilon/minosoft/data/entities/entities/item/ItemEntity.kt
index 6165c7e8e..4335e4d62 100644
--- a/src/main/java/de/bixilon/minosoft/data/entities/entities/item/ItemEntity.kt
+++ b/src/main/java/de/bixilon/minosoft/data/entities/entities/item/ItemEntity.kt
@@ -40,7 +40,7 @@ class ItemEntity(connection: PlayConnection, entityType: EntityType, data: Entit
 
     companion object : EntityFactory<ItemEntity> {
         override val identifier: ResourceLocation = minecraft("item")
-        private val ITEM_DATA = EntityDataField("ITEM_ITEM")
+        val ITEM_DATA = EntityDataField("ITEM_ITEM")
 
         override fun build(connection: PlayConnection, entityType: EntityType, data: EntityData, position: Vec3d, rotation: EntityRotation): ItemEntity {
             return ItemEntity(connection, entityType, data, position, rotation)
diff --git a/src/main/java/de/bixilon/minosoft/data/entities/entities/player/PlayerEntity.kt b/src/main/java/de/bixilon/minosoft/data/entities/entities/player/PlayerEntity.kt
index 1d1e39eed..50a26312f 100644
--- a/src/main/java/de/bixilon/minosoft/data/entities/entities/player/PlayerEntity.kt
+++ b/src/main/java/de/bixilon/minosoft/data/entities/entities/player/PlayerEntity.kt
@@ -169,7 +169,7 @@ abstract class PlayerEntity(
 
         private val ABSORPTION_HEARTS_DATA = EntityDataField("PLAYER_ABSORPTION_HEARTS")
         private val SCORE_DATA = EntityDataField("PLAYER_SCORE")
-        private val SKIN_PARTS_DATA = EntityDataField("PLAYER_SKIN_PARTS_FLAGS")
+        val SKIN_PARTS_DATA = EntityDataField("PLAYER_SKIN_PARTS_FLAGS")
         private val MAIN_ARM_DATA = EntityDataField("PLAYER_SKIN_MAIN_HAND")
         private val LEFT_SHOULDER_DATA_DATA = EntityDataField("PLAYER_LEFT_SHOULDER_DATA")
         private val RIGHT_SHOULDER_DATA_DATA = EntityDataField("PLAYER_RIGHT_SHOULDER_DATA")