diff --git a/crates/js/src/parser/expression.rs b/crates/js/src/parser/expression.rs
index a9af150a..b4381271 100644
--- a/crates/js/src/parser/expression.rs
+++ b/crates/js/src/parser/expression.rs
@@ -207,10 +207,10 @@ pub struct NewExpression {
 fn parse_primary_expression<const YIELD: bool, const AWAIT: bool>(
     tokenizer: &mut Tokenizer<'_>,
 ) -> Result<Expression, SyntaxError> {
-    if matches!(
-        tokenizer.attempt(Tokenizer::consume_identifier).as_deref(),
-        Ok("this")
-    ) {
+    if tokenizer
+        .attempt(|tokenizer| tokenizer.consume_keyword("this"))
+        .is_ok()
+    {
         Ok(Expression::This)
     } else if let Ok(literal) = Literal::parse(tokenizer) {
         Ok(Expression::Literal(literal))
diff --git a/crates/js/src/parser/tokenizer.rs b/crates/js/src/parser/tokenizer.rs
index f13a09b5..3c672a3b 100644
--- a/crates/js/src/parser/tokenizer.rs
+++ b/crates/js/src/parser/tokenizer.rs
@@ -175,9 +175,9 @@ impl<'a> Tokenizer<'a> {
         self.source.go_back()
     }
 
-    pub fn consume_null_literal(&mut self) -> Result<(), SyntaxError> {
-        if self.source.remaining().starts_with("null") {
-            _ = self.source.advance_by("null".len());
+    pub fn consume_keyword(&mut self, keyword: &str) -> Result<(), SyntaxError> {
+        if self.source.remaining().starts_with(keyword) {
+            _ = self.source.advance_by(keyword.len());
             self.skip_whitespace();
             Ok(())
         } else {
@@ -185,6 +185,10 @@ impl<'a> Tokenizer<'a> {
         }
     }
 
+    pub fn consume_null_literal(&mut self) -> Result<(), SyntaxError> {
+        self.consume_keyword("null")
+    }
+
     pub fn consume_boolean_literal(&mut self) -> Result<bool, SyntaxError> {
         let remaining = self.source.remaining();
         let boolean_literal = if remaining.starts_with("true") {