diff --git a/lib/server/rest.js b/lib/server/rest.js
index b6edb70d..d34d2290 100644
--- a/lib/server/rest.js
+++ b/lib/server/rest.js
@@ -109,7 +109,7 @@
             switch (p.request.method) {
             case 'GET':
                 if (Util.strCmp(lQuery, 'size'))
-                    dir.getSize(p.name, function(pErr, pSize) {
+                    dir.getSize(p.name, function(pError, pSize) {
                         checkSendError(pError, p, function() {
                             lSize = CloudFunc.getShortSize(pSize);
                             sendResponse(p, lSize);