diff --git a/modules/setting-management/src/Volo.Abp.SettingManagement.Web/Pages/SettingManagement/Components/EmailSettingGroup/Default.cshtml b/modules/setting-management/src/Volo.Abp.SettingManagement.Web/Pages/SettingManagement/Components/EmailSettingGroup/Default.cshtml
index f653ec54a0..61d4dbe996 100644
--- a/modules/setting-management/src/Volo.Abp.SettingManagement.Web/Pages/SettingManagement/Components/EmailSettingGroup/Default.cshtml
+++ b/modules/setting-management/src/Volo.Abp.SettingManagement.Web/Pages/SettingManagement/Components/EmailSettingGroup/Default.cshtml
@@ -31,7 +31,7 @@
                 </abp-button>
                 @if (await PermissionChecker.IsGrantedAsync(SettingManagementPermissions.EmailingTest))
                 {
-                    <abp-button button-type="Primary" id="SendTestEmailButton">
+                    <abp-button button-type="Outline_Primary" id="SendTestEmailButton">
                         <i class="fa fa-send"></i> @L["SendTestEmail"]
                     </abp-button>
                 }