diff --git a/code-generators/src/main/java/net/minestom/codegen/potion/PotionEffectGenerator.java b/code-generators/src/main/java/net/minestom/codegen/potion/PotionEffectGenerator.java
index 05423ba89..cc7eac6b4 100644
--- a/code-generators/src/main/java/net/minestom/codegen/potion/PotionEffectGenerator.java
+++ b/code-generators/src/main/java/net/minestom/codegen/potion/PotionEffectGenerator.java
@@ -100,7 +100,7 @@ public final class PotionEffectGenerator extends MinestomCodeGenerator {
                         .returns(potionEffectClassName)
                         .addAnnotation(Nullable.class)
                         .addParameter(TypeName.SHORT, "id")
-                        .beginControlFlow("if(id >= 0 && id < VALUES.length + 1)")
+                        .beginControlFlow("if(id >= 1 && id < VALUES.length + 1)")
                         .addStatement("return VALUES[id - 1]")
                         .endControlFlow()
                         .addStatement("return null")
diff --git a/src/autogenerated/java/net/minestom/server/potion/PotionEffect.java b/src/autogenerated/java/net/minestom/server/potion/PotionEffect.java
index e69b8d332..e45255803 100644
--- a/src/autogenerated/java/net/minestom/server/potion/PotionEffect.java
+++ b/src/autogenerated/java/net/minestom/server/potion/PotionEffect.java
@@ -102,7 +102,7 @@ public enum PotionEffect implements Keyed {
 
     @Nullable
     public static PotionEffect fromId(short id) {
-        if(id >= 0 && id < VALUES.length + 1) {
+        if(id >= 1 && id < VALUES.length + 1) {
             return VALUES[id - 1];
         }
         return null;