diff --git a/core/src/main/java/org/geysermc/geyser/translator/inventory/BeaconInventoryTranslator.java b/core/src/main/java/org/geysermc/geyser/translator/inventory/BeaconInventoryTranslator.java
index db0702e13..a0b6ebe9c 100644
--- a/core/src/main/java/org/geysermc/geyser/translator/inventory/BeaconInventoryTranslator.java
+++ b/core/src/main/java/org/geysermc/geyser/translator/inventory/BeaconInventoryTranslator.java
@@ -119,7 +119,7 @@ public class BeaconInventoryTranslator extends AbstractBlockInventoryTranslator
     }
 
     private OptionalInt toJava(int effectChoice) {
-        return effectChoice == 0 ? OptionalInt.empty() : OptionalInt.of(effectChoice);
+        return effectChoice == 0 ? OptionalInt.empty() : OptionalInt.of(effectChoice - 1);
     }
 
     @Override