diff --git a/SampleCode/iOS/NEMeetingDemo/AppDelegate.m b/SampleCode/iOS/NEMeetingDemo/AppDelegate.m
index 6f1fcccf..c5e304a9 100644
--- a/SampleCode/iOS/NEMeetingDemo/AppDelegate.m
+++ b/SampleCode/iOS/NEMeetingDemo/AppDelegate.m
@@ -38,7 +38,7 @@ - (UIInterfaceOrientationMask)application:(UIApplication *)application supported
 - (void)setupIMSDKPrivateAppKey {
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
-         [[NIMSDK sharedSDK] registerWithAppID:kIMAppKey cerName:nil];
+        [[NIMSDK sharedSDK] registerWithAppID:kIMAppKey cerName:nil];
     });
 }
 - (void)doSetupMeetingSdk {
diff --git "a/\345\274\200\345\217\221\346\226\207\346\241\243/SDK\351\233\206\346\210\220/Android/CHANGELOG.md" "b/\345\274\200\345\217\221\346\226\207\346\241\243/SDK\351\233\206\346\210\220/Android/CHANGELOG.md"
index a45732ba..1145ac8a 100644
--- "a/\345\274\200\345\217\221\346\226\207\346\241\243/SDK\351\233\206\346\210\220/Android/CHANGELOG.md"
+++ "b/\345\274\200\345\217\221\346\226\207\346\241\243/SDK\351\233\206\346\210\220/Android/CHANGELOG.md"
@@ -25,7 +25,6 @@
     - 新增`NEMeetingInfo.sipId`字段
     - 新增`NEHistoryMeetingItem.sipId`字段
 
-
 # 2021-4-30 @ v1.7.2
 
 ## Added
@@ -101,6 +100,7 @@
 * 新增切换音频模式开关入会配置：
     - `NEMeetingOptions.noSwitchAudioMode`
 * 新增SIP拨号入会 
+
 ## Changed
 
 * 废弃`com.netease.meetinglib.sdk.NEMeetingMenuItem`菜单类，使用`com.netease.meetinglib.sdk.menu.NEMeetingMenuItem`代替