diff --git a/routes/leaderboard.js b/routes/leaderboard.js
index 9e4fbb0..4cfe0dd 100644
--- a/routes/leaderboard.js
+++ b/routes/leaderboard.js
@@ -35,7 +35,7 @@ router.get("/", async function (req, res, next) {
                 lose: user.lose || 0,
                 winRate: parseFloat(winRate.toFixed(2)), // 소수점 2자리까지 표시
                 totalGames: totalGames,
-                imageindex: user.profileImageIndex,
+                imageIndex: user.profileImageIndex,
             };
         })
             .sort((a, b) => {
diff --git a/routes/users.js b/routes/users.js
index 85c06a5..4099975 100644
--- a/routes/users.js
+++ b/routes/users.js
@@ -22,7 +22,7 @@ router.post('/signup', async function (req, res, next) {
     var email = req.body.email;
     var password = req.body.password;
     var nickname = req.body.nickname;
-    var profileImageIndex = req.body.imageindex ?? 0;
+    var profileImageIndex = req.body.imageIndex ?? 0;
 
     // 입력값 검증
     if( !email || !password || !nickname ){
@@ -95,7 +95,7 @@ router.post("/signin", async function (req, res, next) {
 
         res.json({
           result: ResponseType.SUCCESS,
-          imageindex: existingUser.imageindex,
+          imageIndex: existingUser.imageIndex,
           rating: existingUser.rating,
           score: existingUser.score,
           coins: existingUser.coins,
@@ -240,7 +240,7 @@ router.get("/get-info", async function (req, res, next) {
       nickname: user.nickname,
       rating: user.rating,
       score: Number(user.score) || 0,
-      imageindex: Number(user.profileImageIndex)
+      imageIndex: Number(user.profileImageIndex)
     })
 
   } catch (err) {