diff --git a/crates/oxc_ast/src/ast/js.rs b/crates/oxc_ast/src/ast/js.rs
index 05c3b7482..e899fe468 100644
--- a/crates/oxc_ast/src/ast/js.rs
+++ b/crates/oxc_ast/src/ast/js.rs
@@ -741,7 +741,7 @@ pub struct ObjectAssignmentTarget<'a> {
 #[derive(Debug, PartialEq, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize), serde(untagged))]
 pub enum AssignmentTargetMaybeDefault<'a> {
-    AssignmentTarget(Box<'a, AssignmentTarget<'a>>),
+    AssignmentTarget(AssignmentTarget<'a>),
     AssignmentTargetWithDefault(Box<'a, AssignmentTargetWithDefault<'a>>),
 }
 
diff --git a/crates/oxc_ast/src/lib.rs b/crates/oxc_ast/src/lib.rs
index bcabb56f4..8f01b4167 100644
--- a/crates/oxc_ast/src/lib.rs
+++ b/crates/oxc_ast/src/lib.rs
@@ -68,6 +68,9 @@ fn no_bloat_enum_sizes() {
     assert_eq!(size_of::<ModuleDeclarationKind>(), 16);
     assert_eq!(size_of::<ClassElement>(), 16);
     assert_eq!(size_of::<ExportDefaultDeclarationKind>(), 16);
+    assert_eq!(size_of::<AssignmentTargetPattern>(), 16);
+    assert_eq!(size_of::<AssignmentTargetMaybeDefault>(), 24);
+    assert_eq!(size_of::<AssignmentTargetProperty>(), 16);
     assert_eq!(size_of::<TSLiteral>(), 16);
     assert_eq!(size_of::<TSType>(), 16);
 }
diff --git a/crates/oxc_parser/src/js/grammar.rs b/crates/oxc_parser/src/js/grammar.rs
index ffea9b60d..cd1eb54b9 100644
--- a/crates/oxc_parser/src/js/grammar.rs
+++ b/crates/oxc_parser/src/js/grammar.rs
@@ -108,7 +108,7 @@ impl<'a> CoverGrammar<'a, Expression<'a>> for AssignmentTargetMaybeDefault<'a> {
             }
             expr => {
                 let target = AssignmentTarget::cover(expr, p)?;
-                Ok(AssignmentTargetMaybeDefault::AssignmentTarget(p.ast.alloc(target)))
+                Ok(AssignmentTargetMaybeDefault::AssignmentTarget(target))
             }
         }
     }