diff --git a/src/main/java/com/simibubi/create/foundation/item/CustomRenderedArmorItem.java b/src/main/java/com/simibubi/create/foundation/item/CustomRenderedArmorItem.java
index 607b51ce1..3f8744044 100644
--- a/src/main/java/com/simibubi/create/foundation/item/CustomRenderedArmorItem.java
+++ b/src/main/java/com/simibubi/create/foundation/item/CustomRenderedArmorItem.java
@@ -8,7 +8,10 @@ import net.minecraft.client.renderer.entity.layers.HumanoidArmorLayer;
 import net.minecraft.world.entity.EquipmentSlot;
 import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.item.ItemStack;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
 
 public interface CustomRenderedArmorItem {
+	@OnlyIn(Dist.CLIENT)
 	void renderArmorPiece(HumanoidArmorLayer<?, ?, ?> layer, PoseStack poseStack, MultiBufferSource bufferSource, LivingEntity entity, EquipmentSlot slot, int light, HumanoidModel<?> originalModel, ItemStack stack);
 }
diff --git a/src/main/java/com/simibubi/create/foundation/item/LayeredArmorItem.java b/src/main/java/com/simibubi/create/foundation/item/LayeredArmorItem.java
index 5ac1a374f..487a147d1 100644
--- a/src/main/java/com/simibubi/create/foundation/item/LayeredArmorItem.java
+++ b/src/main/java/com/simibubi/create/foundation/item/LayeredArmorItem.java
@@ -13,8 +13,11 @@ import net.minecraft.world.entity.EquipmentSlot;
 import net.minecraft.world.entity.LivingEntity;
 import net.minecraft.world.item.ArmorItem;
 import net.minecraft.world.item.ItemStack;
+import net.minecraftforge.api.distmarker.Dist;
+import net.minecraftforge.api.distmarker.OnlyIn;
 
 public interface LayeredArmorItem extends CustomRenderedArmorItem {
+	@OnlyIn(Dist.CLIENT)
 	@SuppressWarnings({ "unchecked", "rawtypes" })
 	@Override
 	default void renderArmorPiece(HumanoidArmorLayer<?, ?, ?> layer, PoseStack poseStack,