diff --git a/buildcraft_resources/changelog/6.4.11 b/buildcraft_resources/changelog/6.4.11
new file mode 100644
index 00000000..c048b9c2
--- /dev/null
+++ b/buildcraft_resources/changelog/6.4.11
@@ -0,0 +1 @@
+Fixed a copypaste error causing a rare crash. (Surprisingly, despite extensive testing, I didn't see it either in code or in action.)
diff --git a/buildcraft_resources/versions.txt b/buildcraft_resources/versions.txt
index 69b9fe6e..7f1bcbd2 100755
--- a/buildcraft_resources/versions.txt
+++ b/buildcraft_resources/versions.txt
@@ -1,3 +1,3 @@
 1.6.4:BuildCraft:4.2.2
 1.7.2:BuildCraft:6.0.16
-1.7.10:BuildCraft:6.4.10
+1.7.10:BuildCraft:6.4.11
diff --git a/common/buildcraft/energy/TileEngineIron.java b/common/buildcraft/energy/TileEngineIron.java
index 78b4dfff..9b9b0738 100644
--- a/common/buildcraft/energy/TileEngineIron.java
+++ b/common/buildcraft/energy/TileEngineIron.java
@@ -342,7 +342,7 @@ public class TileEngineIron extends TileEngineWithInventory implements IFluidHan
 	public void sendGUINetworkData(ContainerEngine containerEngine, ICrafting iCrafting) {
 		super.sendGUINetworkData(containerEngine, iCrafting);
 		iCrafting.sendProgressBarUpdate(containerEngine, 15, tankFuel.getFluid() != null && tankFuel.getFluid().getFluid() != null ? tankFuel.getFluid().getFluid().getID() : 0);
-		iCrafting.sendProgressBarUpdate(containerEngine, 16, tankCoolant.getFluid() != null && tankFuel.getFluid().getFluid() != null ? tankCoolant.getFluid().getFluid().getID() : 0);
+		iCrafting.sendProgressBarUpdate(containerEngine, 16, tankCoolant.getFluid() != null && tankCoolant.getFluid().getFluid() != null ? tankCoolant.getFluid().getFluid().getID() : 0);
 		iCrafting.sendProgressBarUpdate(containerEngine, 17, tankFuel.getFluid() != null ? tankFuel.getFluid().amount : 0);
 		iCrafting.sendProgressBarUpdate(containerEngine, 18, tankCoolant.getFluid() != null ? tankCoolant.getFluid().amount : 0);
 		iCrafting.sendProgressBarUpdate(containerEngine, 19, tankFuel.colorRenderCache);