diff --git a/src/main/java/modtweaker2/mods/appeng/handlers/Inscriber.java b/src/main/java/modtweaker2/mods/appeng/handlers/Inscriber.java
index f0b70fc..34a004f 100644
--- a/src/main/java/modtweaker2/mods/appeng/handlers/Inscriber.java
+++ b/src/main/java/modtweaker2/mods/appeng/handlers/Inscriber.java
@@ -54,7 +54,7 @@ public class Inscriber {
 		public void apply() {
 			ArrayList<InscriberRecipe> recipesToRemove = new ArrayList<Inscribe.InscriberRecipe>();
 			for (InscriberRecipe recipe : Inscribe.recipes) {
-				if (recipe.output.isItemEqual(stack)) {
+				if (recipe !=null && recipe.output !=null && recipe.output.isItemEqual(stack)) {
 					recipesToRemove.add(recipe);
 				}
 			}