diff --git a/APPL/IMP/imp_shared.js b/APPL/IMP/imp_shared.js
index d9224d0721..456075bb0a 100644
--- a/APPL/IMP/imp_shared.js
+++ b/APPL/IMP/imp_shared.js
@@ -412,19 +412,21 @@ function backupfolder(import_app, folder, import_key)
     if (!folder)
         return null;
 
+    // <folder>\BACKUP<jaar>\<import_app>\<maand>\<fulldate>_<import_key>
     var fso = new ActiveXObject("Scripting.FileSystemObject");
+    var jsDate = new Date();
 
     folder = folder.replace("/", "\\");
     if (folder.substr(folder.length-1) != "\\")
         folder += "\\";
-    var backDir = folder + "BACKUP"+(new Date).getFullYear()+"\\";
+    var backDir = folder + "BACKUP" + jsDate.getFullYear() + "-" + padout(jsDate.getMonth() + 1) + "\\";
     if (!fso.FolderExists(backDir))
         fso.CreateFolder(backDir);
+
     backDir += import_app + "\\";
     if (!fso.FolderExists(backDir))
         fso.CreateFolder(backDir);
 
-    var jsDate = new Date();
     var dtstring = padout(jsDate.getFullYear())  + "-" + padout(jsDate.getMonth() + 1) + "-" + padout(jsDate.getDate());
 
     backDir += dtstring + "_" + import_key + "\\";