diff --git a/src/pkg/exp/eval/main.go b/src/pkg/exp/eval/main.go
index 6033088a39f..7e2068ab4ed 100644
--- a/src/pkg/exp/eval/main.go
+++ b/src/pkg/exp/eval/main.go
@@ -25,7 +25,7 @@ func main() {
 			println(err.String())
 			os.Exit(1)
 		}
-		file, err := parser.ParseFile(*filename, data, nil, 0)
+		file, err := parser.ParseFile(*filename, data, 0)
 		if err != nil {
 			println(err.String())
 			os.Exit(1)