1 files changed, 7 insertions, 4 deletions
diff --git a/src/main/java/me/shedaniel/rei/server/InputSlotCrafter.java b/src/main/java/me/shedaniel/rei/server/InputSlotCrafter.java
index c84f43388..c7eba25b1 100644
--- a/src/main/java/me/shedaniel/rei/server/InputSlotCrafter.java
+++ b/src/main/java/me/shedaniel/rei/server/InputSlotCrafter.java
@@ -62,11 +62,11 @@ public class InputSlotCrafter<C extends Inventory> implements RecipeGridAligner<
                 this.fillInputSlots(recipeFinder, ingredients, hasShift);
             } else {
                 this.returnInputs();
-                craftingContainer.sendContentUpdates();
-                throw new NullPointerException();
+                player.inventory.markDirty();
+                throw new NotEnoughMaterialsException();
             }
-            
-            craftingContainer.sendContentUpdates();
+    
+            player.inventory.markDirty();
         }
     }
     
@@ -241,4 +241,7 @@ public class InputSlotCrafter<C extends Inventory> implements RecipeGridAligner<
         return int_1;
     }
     
+    public static class NotEnoughMaterialsException extends RuntimeException {
+    }
+    
 }