diff --git a/src/main/java/com/gmail/nossr50/skills/alchemy/AlchemyPotionBrewer.java b/src/main/java/com/gmail/nossr50/skills/alchemy/AlchemyPotionBrewer.java
index 0fa16aa7b..c6e8cff4d 100644
--- a/src/main/java/com/gmail/nossr50/skills/alchemy/AlchemyPotionBrewer.java
+++ b/src/main/java/com/gmail/nossr50/skills/alchemy/AlchemyPotionBrewer.java
@@ -129,7 +129,7 @@ public final class AlchemyPotionBrewer {
             inputList.add(input);
 
             if (output != null) {
-                outputList.set(i, output.toItemStack(item.getAmount()).clone());
+                outputList.add(output.toItemStack(item.getAmount()).clone());
             }
         }