diff --git a/common/buildcraft/api/recipes/AssemblyRecipe.java b/common/buildcraft/api/recipes/AssemblyRecipe.java
index c9ace7fc..f9db4ce9 100644
--- a/common/buildcraft/api/recipes/AssemblyRecipe.java
+++ b/common/buildcraft/api/recipes/AssemblyRecipe.java
@@ -1,6 +1,8 @@
 package buildcraft.api.recipes;
 
 import java.util.LinkedList;
+
+import buildcraft.core.inventory.StackHelper;
 import net.minecraft.item.ItemStack;
 
 public class AssemblyRecipe {