diff --git a/src/index.test.ts b/src/index.test.ts
index f227f53..f19e464 100644
--- a/src/index.test.ts
+++ b/src/index.test.ts
@@ -24,12 +24,12 @@ it("execute 1 == 2", () => {
   expect(execute("1 == 2")).toBe("거짓");
 });
 
-it("execute 2 > 1 == 참", () => {
-  expect(execute("2 > 1 == 참")).toBe("참");
+it("execute 참 == 2 > 1", () => {
+  expect(execute("참 == 2 > 1")).toBe("참");
 });
 
-it("execute 1 != 1 == 거짓", () => { // note that comparison is left associative
-  expect(execute("1 != 1 == 거짓")).toBe("참");
+it("execute 거짓 == 1 != 1", () => { // note that comparison is left associative
+  expect(execute("거짓 == 1 != 1")).toBe("참");
 });
 
 it("execute 거짓 == (1 < 1+1)", () => {
diff --git a/src/index.ts b/src/index.ts
index 278f9ac..86652f1 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,11 +1,11 @@
 import Lexer from "./lexer";
-import Parser from "./parser";
-import Evaluator, { Environment } from "./evaluator";
+import Parser from "./parser/v2";
+import Evaluator, { Environment } from "./evaluator/v2";
 
 export const execute = (input: string): string => {
   const lexer = new Lexer(input);
   const parser = new Parser(lexer);
-  const parsed = parser.parseProgram();
+  const parsed = parser.parseSource();
 
   const evaluator = new Evaluator();
   const environment = new Environment();