diff --git a/common/buildcraft/api/liquids/LiquidTank.java b/common/buildcraft/api/liquids/LiquidTank.java
index bedbc632..62f51755 100644
--- a/common/buildcraft/api/liquids/LiquidTank.java
+++ b/common/buildcraft/api/liquids/LiquidTank.java
@@ -7,6 +7,10 @@ public class LiquidTank implements ILiquidTank {
 	private LiquidStack liquid;
 	private int capacity;
 	
+	public LiquidTank(int capacity) {
+		this(null, capacity);
+	}
+	
 	public LiquidTank(int liquidId, int quantity, int capacity) {
 		this(new LiquidStack(liquidId, quantity), capacity);
 	}