2 files changed, 4 insertions, 4 deletions
diff --git a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Fluid.java b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Fluid.java
index b7662569dc..560ddb0947 100644
--- a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Fluid.java
+++ b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Fluid.java
@@ -28,8 +28,8 @@ import net.minecraftforge.fluids.FluidTankInfo;
 import net.minecraftforge.fluids.IFluidHandler;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.Map.Entry;
+import java.util.concurrent.ConcurrentHashMap;
 
 import static gregtech.api.enums.GT_Values.D1;
 
@@ -187,7 +187,7 @@ public class GT_MetaPipeEntity_Fluid extends MetaPipeEntity {
             }
 
             if (mLastReceivedFrom == oLastReceivedFrom) {
-                HashMap<IFluidHandler, ForgeDirection> tTanks = new HashMap<IFluidHandler, ForgeDirection>();
+                ConcurrentHashMap<IFluidHandler, ForgeDirection> tTanks = new ConcurrentHashMap<IFluidHandler, ForgeDirection>();
 
                 mConnections = 0;
 
diff --git a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Item.java b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Item.java
index 7cb88cb0cd..0a3ee8d5ce 100644
--- a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Item.java
+++ b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaPipeEntity_Item.java
@@ -19,7 +19,7 @@ import net.minecraft.tileentity.TileEntityDispenser;
 import net.minecraft.tileentity.TileEntityHopper;
 
 import java.util.ArrayList;
-import java.util.HashMap;
+import java.util.concurrent.ConcurrentHashMap;
 
 public class GT_MetaPipeEntity_Item extends MetaPipeEntity implements IMetaTileEntityItemPipe {
     public final float mThickNess;
@@ -205,7 +205,7 @@ public class GT_MetaPipeEntity_Item extends MetaPipeEntity implements IMetaTileE
                 for (boolean temp = true; temp && !isInventoryEmpty() && pipeCapacityCheck(); ) {
                     temp = false;
                     tPipeList.clear();
-                    for (IMetaTileEntityItemPipe tTileEntity : GT_Utility.sortMapByValuesAcending(IMetaTileEntityItemPipe.Util.scanPipes(this, new HashMap<IMetaTileEntityItemPipe, Long>(), 0, false, false)).keySet()) {
+                    for (IMetaTileEntityItemPipe tTileEntity : GT_Utility.sortMapByValuesAcending(IMetaTileEntityItemPipe.Util.scanPipes(this, new ConcurrentHashMap<IMetaTileEntityItemPipe, Long>(), 0, false, false)).keySet()) {
                         if (temp) break;
                         tPipeList.add(tTileEntity);
                         while (!temp && !isInventoryEmpty() && tTileEntity.sendItemStack(aBaseMetaTileEntity))