diff --git a/index.php b/index.php
index 7b6b7d0a..6cba1f2a 100644
--- a/index.php
+++ b/index.php
@@ -58,7 +58,7 @@ function getOAuthToken(mode, scope_list){
         url += '&scope='+scope_list;
     }
 
-    window.open(url,"KakaoAccountLogin","width=600,height=450");
+    window.open(url,"KakaoAccountLogin","width=600,height=450,resizable=yes,scrollbars=yes");
 }
 
 function sendTempPasswordToKakaoTalk(){
diff --git a/oauth_kakao/index.php b/oauth_kakao/index.php
index 15a7db99..9b55fe26 100644
--- a/oauth_kakao/index.php
+++ b/oauth_kakao/index.php
@@ -27,7 +27,7 @@ function getOAuthToken(mode='login', scope_list = null){
         url += '&scope='+scope_list;
     }
 
-    window.open(url,"KakaoAccountLogin","width=600,height=450");
+    window.open(url,"KakaoAccountLogin","width=600,height=450,resizable=yes,scrollbars=yes");
 
 }