diff --git a/src/main/java/appeng/container/AEBaseContainer.java b/src/main/java/appeng/container/AEBaseContainer.java
index d1b3710a..ac217bbb 100644
--- a/src/main/java/appeng/container/AEBaseContainer.java
+++ b/src/main/java/appeng/container/AEBaseContainer.java
@@ -438,13 +438,11 @@ public abstract class AEBaseContainer extends Container
 
 		if( Platform.isServer() )
 		{
-			for( final Object crafter : this.listeners )
+			for( final IContainerListener listener : this.listeners )
 			{
-				final IContainerListener IContainerListener = (IContainerListener) crafter;
-
 				for( final SyncData sd : this.syncData.values() )
 				{
-					sd.tick( IContainerListener );
+					sd.tick( listener );
 				}
 			}
 		}
diff --git a/src/main/java/appeng/container/implementations/ContainerCellWorkbench.java b/src/main/java/appeng/container/implementations/ContainerCellWorkbench.java
index a5932b16..5e0340e5 100644
--- a/src/main/java/appeng/container/implementations/ContainerCellWorkbench.java
+++ b/src/main/java/appeng/container/implementations/ContainerCellWorkbench.java
@@ -26,6 +26,7 @@ import net.minecraft.entity.player.EntityPlayerMP;
 import net.minecraft.entity.player.InventoryPlayer;
 import net.minecraft.inventory.IContainerListener;
 import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.Slot;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.text.ITextComponent;
 
@@ -151,22 +152,24 @@ public class ContainerCellWorkbench extends ContainerUpgradeable
 				this.setValidContainer( false );
 			}
 
-			for( final Object crafter : this.listeners )
+			for( final IContainerListener listener : this.listeners )
 			{
-				final IContainerListener IContainerListener = (IContainerListener) crafter;
-
 				if( this.prevStack != is )
 				{
 					// if the bars changed an item was probably made, so just send shit!
-					for( final Object s : this.inventorySlots )
+					for( final Slot s : this.inventorySlots )
 					{
 						if( s instanceof OptionalSlotRestrictedInput )
 						{
 							final OptionalSlotRestrictedInput sri = (OptionalSlotRestrictedInput) s;
-							IContainerListener.sendSlotContents( this, sri.slotNumber, sri.getStack() );
+							listener.sendSlotContents( this, sri.slotNumber, sri.getStack() );
 						}
 					}
-					( (EntityPlayerMP) IContainerListener ).isChangingQuantityOnly = false;
+
+					if( listener instanceof EntityPlayerMP )
+					{
+						( (EntityPlayerMP) listener ).isChangingQuantityOnly = false;
+					}
 				}
 			}
 
diff --git a/src/main/java/appeng/container/implementations/ContainerPatternTerm.java b/src/main/java/appeng/container/implementations/ContainerPatternTerm.java
index 5c88a8ad..18e370da 100644
--- a/src/main/java/appeng/container/implementations/ContainerPatternTerm.java
+++ b/src/main/java/appeng/container/implementations/ContainerPatternTerm.java
@@ -200,7 +200,7 @@ public class ContainerPatternTerm extends ContainerMEMonitorable implements IAEA
 		if( output != null && !this.isPattern( output ) )
 		{
 			return;
-		}// if nothing is there we should snag a new pattern.
+		} // if nothing is there we should snag a new pattern.
 		else if( output == null )
 		{
 			output = this.patternSlotIN.getStack();
@@ -483,19 +483,19 @@ public class ContainerPatternTerm extends ContainerMEMonitorable implements IAEA
 	{
 		if( s == this.patternSlotOUT && Platform.isServer() )
 		{
-			for( final Object crafter : this.listeners )
+			for( final IContainerListener listener : this.listeners )
 			{
-				final IContainerListener IContainerListener = (IContainerListener) crafter;
-
-				for( final Object g : this.inventorySlots )
+				for( final Slot slot : this.inventorySlots )
 				{
-					if( g instanceof OptionalSlotFake || g instanceof SlotFakeCraftingMatrix )
+					if( slot instanceof OptionalSlotFake || slot instanceof SlotFakeCraftingMatrix )
 					{
-						final Slot sri = (Slot) g;
-						IContainerListener.sendSlotContents( this, sri.slotNumber, sri.getStack() );
+						listener.sendSlotContents( this, slot.slotNumber, slot.getStack() );
 					}
 				}
-				( (EntityPlayerMP) IContainerListener ).isChangingQuantityOnly = false;
+				if( listener instanceof EntityPlayerMP )
+				{
+					( (EntityPlayerMP) listener ).isChangingQuantityOnly = false;
+				}
 			}
 			this.detectAndSendChanges();
 		}
diff --git a/src/main/java/appeng/container/implementations/ContainerSecurityStation.java b/src/main/java/appeng/container/implementations/ContainerSecurityStation.java
index 061022e4..f239ac71 100644
--- a/src/main/java/appeng/container/implementations/ContainerSecurityStation.java
+++ b/src/main/java/appeng/container/implementations/ContainerSecurityStation.java
@@ -168,11 +168,10 @@ public class ContainerSecurityStation extends ContainerMEMonitorable implements
 					this.wirelessOut.putStack( term );
 
 					// update the two slots in question...
-					for( final Object crafter : this.listeners )
+					for( final IContainerListener listener : this.listeners )
 					{
-						final IContainerListener IContainerListener = (IContainerListener) crafter;
-						IContainerListener.sendSlotContents( this, this.wirelessIn.slotNumber, this.wirelessIn.getStack() );
-						IContainerListener.sendSlotContents( this, this.wirelessOut.slotNumber, this.wirelessOut.getStack() );
+						listener.sendSlotContents( this, this.wirelessIn.slotNumber, this.wirelessIn.getStack() );
+						listener.sendSlotContents( this, this.wirelessOut.slotNumber, this.wirelessOut.getStack() );
 					}
 				}
 			}