diff --git a/src/main/java/com/hbm/handler/ae2/MSUExternalStorageHandler.java b/src/main/java/com/hbm/handler/ae2/MSUExternalStorageHandler.java
index be5dadbfa..fe82feb00 100644
--- a/src/main/java/com/hbm/handler/ae2/MSUExternalStorageHandler.java
+++ b/src/main/java/com/hbm/handler/ae2/MSUExternalStorageHandler.java
@@ -15,7 +15,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.tileentity.TileEntity;
 import net.minecraftforge.common.util.ForgeDirection;
 
-@Optional.Interface(iface = "appeng.api.storage.IExternalStorageHandler", modid = "appliedenergistics2")
+@Optional.InterfaceList({@Optional.Interface(iface = "appeng.api.storage.IExternalStorageHandler", modid = "appliedenergistics2")})
 public class MSUExternalStorageHandler implements IExternalStorageHandler {
 
     public MSUExternalStorageHandler() {}
diff --git a/src/main/java/com/hbm/handler/ae2/MassStorageMEInventory.java b/src/main/java/com/hbm/handler/ae2/MassStorageMEInventory.java
index 4728043ff..848e2c053 100644
--- a/src/main/java/com/hbm/handler/ae2/MassStorageMEInventory.java
+++ b/src/main/java/com/hbm/handler/ae2/MassStorageMEInventory.java
@@ -14,7 +14,7 @@ import appeng.api.storage.data.IAEItemStack;
 import appeng.api.storage.data.IItemList;
 import net.minecraft.item.ItemStack;
 
-@Optional.Interface(iface = "appeng.api.storage.IMEInventory", modid = "appliedenergistics2")
+@Optional.InterfaceList({@Optional.Interface(iface = "appeng.api.storage.IMEInventory", modid = "appliedenergistics2")})
 public class MassStorageMEInventory implements IMEInventory<IAEItemStack> {
 
     private TileEntityMassStorage tile;