diff --git a/account/views/oj.py b/account/views/oj.py
index fdf2c31..b1cef63 100644
--- a/account/views/oj.py
+++ b/account/views/oj.py
@@ -66,8 +66,8 @@ class UserRegisterAPI(APIView):
         """
         data = request.data
         captcha = Captcha(request)
-        # if not captcha.check(data["captcha"]):
-        #     return self.error("Invalid captcha")
+        if not captcha.check(data["captcha"]):
+            return self.error("Invalid captcha")
         try:
             User.objects.get(username=data["username"])
             return self.error("Username already exists")
diff --git a/account/views/user.py b/account/views/user.py
index 1f9ee24..d0b8393 100644
--- a/account/views/user.py
+++ b/account/views/user.py
@@ -14,9 +14,8 @@ from utils.shortcuts import rand_str
 
 from ..decorators import login_required
 from ..models import User, UserProfile
-from ..serializers import (EditUserSerializer, SSOSerializer,
-                           TwoFactorAuthCodeSerializer, UserSerializer,
-                           UserProfileSerializer, UserInfoSerializer,
+from ..serializers import (SSOSerializer, TwoFactorAuthCodeSerializer,
+                           UserSerializer, UserProfileSerializer,
                            EditUserProfileSerializer, AvatarUploadForm)
 
 
@@ -33,7 +32,7 @@ class UserInfoAPI(APIView):
             return self.error("User does not exist")
         profile = UserProfile.objects.get(user=user)
         dit = UserProfileSerializer(profile).data
-        dit['user'] = UserSerializer(user).data
+        dit["user"] = UserSerializer(user).data
         return self.success(dit)
 
 
@@ -49,7 +48,7 @@ class UserProfileAPI(APIView):
             return self.error("User does not exist")
         profile = UserProfile.objects.get(user=user)
         dit = UserProfileSerializer(profile).data
-        dit['user'] = UserSerializer(user).data
+        dit["user"] = UserSerializer(user).data
         return self.success(dit)
 
     @validate_serializer(EditUserProfileSerializer)