diff --git a/src/main/java/de/ellpeck/actuallyadditions/mod/items/lens/LensColor.java b/src/main/java/de/ellpeck/actuallyadditions/mod/items/lens/LensColor.java
index 96f140f94..6fde75f42 100644
--- a/src/main/java/de/ellpeck/actuallyadditions/mod/items/lens/LensColor.java
+++ b/src/main/java/de/ellpeck/actuallyadditions/mod/items/lens/LensColor.java
@@ -99,7 +99,7 @@ public class LensColor extends Lens{
             }
         }
 
-        return null;
+        return ItemStack.EMPTY.copy();
     }
 
     @Override