diff --git a/books/zh/theme/version-selector.js b/books/zh/theme/version-selector.js
index 65858d2..8f15c5a 100644
--- a/books/zh/theme/version-selector.js
+++ b/books/zh/theme/version-selector.js
@@ -22,7 +22,7 @@
     var docsMatch = path.match(/^(\/docs\/)/);
     if (docsMatch) root = docsMatch[1];
 
-    var p = docsRoot;
+    var p = root;
     if (version === "v1") p += "v1/";
     if (lang === "zh") p += "cn/";
     return p;
diff --git a/theme/version-selector.js b/theme/version-selector.js
index 65858d2..8f15c5a 100644
--- a/theme/version-selector.js
+++ b/theme/version-selector.js
@@ -22,7 +22,7 @@
     var docsMatch = path.match(/^(\/docs\/)/);
     if (docsMatch) root = docsMatch[1];
 
-    var p = docsRoot;
+    var p = root;
     if (version === "v1") p += "v1/";
     if (lang === "zh") p += "cn/";
     return p;
diff --git a/v1/books/zh/theme/version-selector.js b/v1/books/zh/theme/version-selector.js
index 65858d2..8f15c5a 100644
--- a/v1/books/zh/theme/version-selector.js
+++ b/v1/books/zh/theme/version-selector.js
@@ -22,7 +22,7 @@
     var docsMatch = path.match(/^(\/docs\/)/);
     if (docsMatch) root = docsMatch[1];
 
-    var p = docsRoot;
+    var p = root;
     if (version === "v1") p += "v1/";
     if (lang === "zh") p += "cn/";
     return p;
diff --git a/v1/theme/version-selector.js b/v1/theme/version-selector.js
index 65858d2..8f15c5a 100644
--- a/v1/theme/version-selector.js
+++ b/v1/theme/version-selector.js
@@ -22,7 +22,7 @@
     var docsMatch = path.match(/^(\/docs\/)/);
     if (docsMatch) root = docsMatch[1];
 
-    var p = docsRoot;
+    var p = root;
     if (version === "v1") p += "v1/";
     if (lang === "zh") p += "cn/";
     return p;
diff --git a/v2/books/zh/theme/version-selector.js b/v2/books/zh/theme/version-selector.js
index 65858d2..8f15c5a 100644
--- a/v2/books/zh/theme/version-selector.js
+++ b/v2/books/zh/theme/version-selector.js
@@ -22,7 +22,7 @@
     var docsMatch = path.match(/^(\/docs\/)/);
     if (docsMatch) root = docsMatch[1];
 
-    var p = docsRoot;
+    var p = root;
     if (version === "v1") p += "v1/";
     if (lang === "zh") p += "cn/";
     return p;
diff --git a/v2/theme/version-selector.js b/v2/theme/version-selector.js
index 65858d2..8f15c5a 100644
--- a/v2/theme/version-selector.js
+++ b/v2/theme/version-selector.js
@@ -22,7 +22,7 @@
     var docsMatch = path.match(/^(\/docs\/)/);
     if (docsMatch) root = docsMatch[1];
 
-    var p = docsRoot;
+    var p = root;
     if (version === "v1") p += "v1/";
     if (lang === "zh") p += "cn/";
     return p;