diff --git a/common/buildcraft/api/recipes/AssemblyRecipe.java b/common/buildcraft/api/recipes/AssemblyRecipe.java
index 573db282..c9ace7fc 100644
--- a/common/buildcraft/api/recipes/AssemblyRecipe.java
+++ b/common/buildcraft/api/recipes/AssemblyRecipe.java
@@ -32,7 +32,7 @@ public class AssemblyRecipe {
 					continue;
 				}
 
-				if (item.isItemEqual(in)) {
+				if (StackHelper.instance().isCraftingEquivalent(in, item, true)) {
 					found += item.stackSize; // Adds quantity of stack to amount
 												// found
 				}