diff --git a/parts/automation/PartExportBus.java b/parts/automation/PartExportBus.java
index 488521cb9..82a15de18 100644
--- a/parts/automation/PartExportBus.java
+++ b/parts/automation/PartExportBus.java
@@ -27,6 +27,9 @@ import appeng.core.sync.GuiBridge;
 import appeng.me.GridAccessException;
 import appeng.util.InventoryAdaptor;
 import appeng.util.Platform;
+
+import com.google.common.collect.ImmutableList;
+
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
@@ -166,7 +169,7 @@ public class PartExportBus extends PartSharedItemBus implements IGridTickable
 
 					if ( getInstalledUpgrades( Upgrades.FUZZY ) > 0 )
 					{
-						for (IAEItemStack o : inv.getStorageList().findFuzzy( ais, fzMode ))
+						for (IAEItemStack o : ImmutableList.copyOf( inv.getStorageList().findFuzzy( ais, fzMode ) ))
 						{
 							pushItemIntoTarget( d, energy, fzMode, inv, o );
 							if ( itemToSend <= 0 )
diff --git a/util/inv/IMEAdaptor.java b/util/inv/IMEAdaptor.java
index 26e4d1c7c..11af2efe7 100644
--- a/util/inv/IMEAdaptor.java
+++ b/util/inv/IMEAdaptor.java
@@ -13,6 +13,8 @@ import appeng.api.storage.data.IItemList;
 import appeng.util.InventoryAdaptor;
 import appeng.util.item.AEItemStack;
 
+import com.google.common.collect.ImmutableList;
+
 public class IMEAdaptor extends InventoryAdaptor
 {
 
@@ -44,7 +46,7 @@ public class IMEAdaptor extends InventoryAdaptor
 
 		IAEItemStack out = null;
 
-		for (IAEItemStack req : getList().findFuzzy( reqFilter, fuzzyMode ))
+		for (IAEItemStack req : ImmutableList.copyOf( getList().findFuzzy( reqFilter, fuzzyMode ) ))
 		{
 			if ( req != null )
 			{