diff --git a/i18n/zh-hans.json b/i18n/zh-hans.json
index 7add61be..79e7df2b 100644
--- a/i18n/zh-hans.json
+++ b/i18n/zh-hans.json
@@ -24,9 +24,6 @@
 	"wikieditor-preview-tab": "预览",
 	"wikieditor-preview-changes-tab": "更改",
 	"wikieditor-preview-loading": "正在载入...",
-	"wikieditor-previewDialog-preference": "启用预览对话框的",
-	"wikieditor-previewDialog-tab": "预览",
-	"wikieditor-previewDialog-loading": "正在载入...",
 	"wikieditor-publish-preference": "启用逐步发表功能",
 	"wikieditor-publish-button-publish": "发表",
 	"wikieditor-publish-button-cancel": "取消",
@@ -80,7 +77,7 @@
 	"wikieditor-toolbar-file-caption": "标题：",
 	"wikieditor-toolbar-file-size": "尺寸：",
 	"wikieditor-toolbar-file-float": "对齐：",
-	"wikieditor-toolbar-file-default": "(默认)",
+	"wikieditor-toolbar-file-default": "（默认）",
 	"wikieditor-toolbar-file-format": "格式：",
 	"wikieditor-toolbar-file-format-none": "无",
 	"wikieditor-toolbar-tool-file-insert": "插入",