diff --git a/src/main/java/org/bukkit/craftbukkit/legacy/FieldRename.java b/src/main/java/org/bukkit/craftbukkit/legacy/FieldRename.java
index af0118935..c35257b9b 100644
--- a/src/main/java/org/bukkit/craftbukkit/legacy/FieldRename.java
+++ b/src/main/java/org/bukkit/craftbukkit/legacy/FieldRename.java
@@ -275,7 +275,6 @@ public class FieldRename {
             .change("SPELL", "EFFECT")
             .change("SPELL_INSTANT", "INSTANT_EFFECT")
             .change("SPELL_MOB", "ENTITY_EFFECT")
-            .change("SPELL_MOB_AMBIENT", "AMBIENT_ENTITY_EFFECT")
             .change("SPELL_WITCH", "WITCH")
             .change("DRIP_WATER", "DRIPPING_WATER")
             .change("DRIP_LAVA", "DRIPPING_LAVA")
diff --git a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
index b59b9897b..227ae3d50 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/Commodore.java
@@ -271,14 +271,6 @@ public class Commodore {
                             }
                         }
 
-                        if (owner.equals("org/bukkit/Particle")) {
-                            switch (name) {
-                                case "SPELL_MOB_AMBIENT":
-                                    super.visitFieldInsn(opcode, owner, "SPELL_MOB", desc);
-                                    return;
-                            }
-                        }
-
                         super.visitFieldInsn(opcode, owner, name, desc);
                     }