diff --git a/parser/parser_test.go b/parser/parser_test.go
index 9c0508d..fae3374 100644
--- a/parser/parser_test.go
+++ b/parser/parser_test.go
@@ -8,6 +8,7 @@ import (
 
 	"github.com/robertkrimen/otto/ast"
 	"github.com/robertkrimen/otto/file"
+	"github.com/robertkrimen/otto/underscore"
 )
 
 func firstErr(err error) error {
@@ -1005,3 +1006,13 @@ func TestPosition(t *testing.T) {
 		is(node.(*ast.FunctionLiteral).Source, "function(){ return abc; }")
 	})
 }
+
+func BenchmarkParser(b *testing.B) {
+	src := underscore.Source()
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		parser := newParser("", src)
+		parser.parse()
+	}
+}