diff --git a/src/main/java/gregtech/common/items/behaviors/Behaviour_Plunger_Item.java b/src/main/java/gregtech/common/items/behaviors/Behaviour_Plunger_Item.java
index 27f01a98b2..f6a74020ae 100644
--- a/src/main/java/gregtech/common/items/behaviors/Behaviour_Plunger_Item.java
+++ b/src/main/java/gregtech/common/items/behaviors/Behaviour_Plunger_Item.java
@@ -34,7 +34,7 @@ public boolean onItemUseFirst(GT_MetaBase_Item aItem, ItemStack aStack, EntityPl
         if ((aTileEntity instanceof IGregTechTileEntity)) {
             IMetaTileEntity tMetaTileEntity = ((IGregTechTileEntity) aTileEntity).getMetaTileEntity();
             if ((tMetaTileEntity instanceof IMetaTileEntityItemPipe)) {
-                for (Object tTileEntity : GT_Utility.sortMapByValuesAcending(IMetaTileEntityItemPipe.Util.scanPipes((IMetaTileEntityItemPipe) tMetaTileEntity, new ConcurrentHashMap<>(), 0L, false, true)).keySet())
+                for (Object tTileEntity : GT_Utility.sortMapByValuesAcending(IMetaTileEntityItemPipe.Util.scanPipes((IMetaTileEntityItemPipe) tMetaTileEntity, new ConcurrentHashMap<IMetaTileEntityItemPipe,Long>(), 0L, false, true)).keySet())
 
                 {
                     int i = 0;