diff --git a/web/src/auth/AuthCallback.js b/web/src/auth/AuthCallback.js
index b80ff81f..9fcb7275 100644
--- a/web/src/auth/AuthCallback.js
+++ b/web/src/auth/AuthCallback.js
@@ -106,6 +106,7 @@ class AuthCallback extends React.Component {
       method: method,
     };
     const oAuthParams = Util.getOAuthGetParameters(innerParams);
+    const concatChar = oAuthParams.redirectUri.indexOf('?') === -1 ? '?' : '&';
     AuthBackend.login(body, oAuthParams)
       .then((res) => {
         if (res.status === 'ok') {
@@ -118,11 +119,11 @@ class AuthCallback extends React.Component {
             Setting.goToLink(link);
           } else if (responseType === "code") {
             const code = res.data;
-            Setting.goToLink(`${oAuthParams.redirectUri}?code=${code}&state=${oAuthParams.state}`);
+            Setting.goToLink(`${oAuthParams.redirectUri}${concatChar}code=${code}&state=${oAuthParams.state}`);
             // Util.showMessage("success", `Authorization code: ${res.data}`);
           } else if (responseType === "token" || responseType === "id_token"){
             const token = res.data;
-            Setting.goToLink(`${oAuthParams.redirectUri}?${responseType}=${token}&state=${oAuthParams.state}&token_type=bearer`);
+            Setting.goToLink(`${oAuthParams.redirectUri}${concatChar}${responseType}=${token}&state=${oAuthParams.state}&token_type=bearer`);
           } else if (responseType === "link") {
             const from = innerParams.get("from");
             Setting.goToLinkSoft(this, from);
diff --git a/web/src/auth/LoginPage.js b/web/src/auth/LoginPage.js
index ed3fc69a..0333b832 100644
--- a/web/src/auth/LoginPage.js
+++ b/web/src/auth/LoginPage.js
@@ -138,6 +138,7 @@ class LoginPage extends React.Component {
             Setting.goToLink(link);
           } else if (responseType === "code") {
             const code = res.data;
+            const concatChar = oAuthParams.redirectUri.indexOf('?') === -1 ? '?' : '&';
 
             if (Setting.hasPromptPage(application)) {
               AuthBackend.getAccount("")
@@ -150,7 +151,7 @@ class LoginPage extends React.Component {
                     this.onUpdateAccount(account);
 
                     if (Setting.isPromptAnswered(account, application)) {
-                      Setting.goToLink(`${oAuthParams.redirectUri}?code=${code}&state=${oAuthParams.state}`);
+                      Setting.goToLink(`${oAuthParams.redirectUri}${concatChar}code=${code}&state=${oAuthParams.state}`);
                     } else {
                       Setting.goToLinkSoft(ths, `/prompt/${application.name}?redirectUri=${oAuthParams.redirectUri}&code=${code}&state=${oAuthParams.state}`);
                     }
@@ -159,7 +160,7 @@ class LoginPage extends React.Component {
                   }
                 });
             } else {
-              Setting.goToLink(`${oAuthParams.redirectUri}?code=${code}&state=${oAuthParams.state}`);
+              Setting.goToLink(`${oAuthParams.redirectUri}${concatChar}code=${code}&state=${oAuthParams.state}`);
             }
 
             // Util.showMessage("success", `Authorization code: ${res.data}`);