diff --git a/common/buildcraft/BuildCraftTransport.java b/common/buildcraft/BuildCraftTransport.java
index b92b4ca9..86e2a0d4 100644
--- a/common/buildcraft/BuildCraftTransport.java
+++ b/common/buildcraft/BuildCraftTransport.java
@@ -508,7 +508,7 @@ public class BuildCraftTransport extends BuildCraftMod {
 		// Add base recipe for pipe waterproof.
 		GameRegistry.addShapelessRecipe(new ItemStack(pipeWaterproof, 1), new ItemStack(Items.dye, 1, 2));
 		if (additionalWaterproofingRecipe) {
-			GameRegistry.addShapelessRecipe(new ItemStack(pipeWaterproof, 1), new ItemStack(Items.slime_ball, 1, 2));
+			GameRegistry.addShapelessRecipe(new ItemStack(pipeWaterproof, 1), new ItemStack(Items.slime_ball, 1));
 		}
 
 		// Add pipe recipes