diff --git a/src/protocol/ast.rs b/src/protocol/ast.rs
index 95cbc2805eee0963ce98b29bbbdb366651dce657..366d6ae9754350dcf51fcd71f0d21fe614a6dc25 100644
--- a/src/protocol/ast.rs
+++ b/src/protocol/ast.rs
@@ -2073,7 +2073,7 @@ pub struct BindingExpression {
     pub this: BindingExpressionId,
     // Phase 1: parser
     pub position: InputPosition,
-    pub left: ExpressionId,
+    pub left: LiteralExpressionId,
     pub right: ExpressionId,
     // Phase 2: linker
     pub parent: ExpressionParent,