diff --git a/src/main/java/org/blockartistry/mod/ThermalRecycling/support/recipe/RecipeDecomposition.java b/src/main/java/org/blockartistry/mod/ThermalRecycling/support/recipe/RecipeDecomposition.java
index c6e4f08..c7c17f0 100644
--- a/src/main/java/org/blockartistry/mod/ThermalRecycling/support/recipe/RecipeDecomposition.java
+++ b/src/main/java/org/blockartistry/mod/ThermalRecycling/support/recipe/RecipeDecomposition.java
@@ -123,7 +123,7 @@ private static boolean matchClassName(final Object obj, final String name) {
 	}
 
 	private static boolean isClassIgnored(final Object obj) {
-		return classIgnoreList.contains(obj);
+		return classIgnoreList.contains(obj.getClass().getName());
 	}
 
 	private static void scrubProjection(final ItemStack inputStack,