diff --git a/lib/client/key.js b/lib/client/key.js
index ea8fa9d9..8303821f 100644
--- a/lib/client/key.js
+++ b/lib/client/key.js
@@ -110,8 +110,8 @@ var CloudCmd, Util, DOM;
                 lCurrent    = DOM.getCurrentFile(),
                 files       = DOM.getFiles(),
                 SMALL       = 32,
-                charBig     = String.fromCharCode(pKeyCode),
-                char        = String.fromCharCode(pKeyCode + SMALL);
+                char        = String.fromCharCode(pKeyCode),
+                charSmall   = String.fromCharCode(pKeyCode + SMALL);
                 
             n               = Chars.length;
             for (i = 0; i < n; i++)
@@ -128,7 +128,7 @@ var CloudCmd, Util, DOM;
             for (i = 0; i < n; i++) {
                 lCurrent    = files[i];
                 name        = DOM.getCurrentName(lCurrent);
-                isContain   = Util.isContainStrAtBegin(name, [char, charBig]);
+                isContain   = Util.isContainStrAtBegin(name, [char, charSmall]);
                 
                 if (isContain) {
                     byName = DOM.getCurrentFileByName(name);