diff --git a/main/src/nbmain.cxx b/main/src/nbmain.cxx
index d3cc48381f..7b516bae37 100644
--- a/main/src/nbmain.cxx
+++ b/main/src/nbmain.cxx
@@ -129,25 +129,21 @@ static bool InstallNbFiles(string source, string dest)
 static bool CreateJupyterConfig(string dest, string rootbin, string rootlib, string rootdata)
 {
    string jupyconfig = dest + pathsep + JUPYTER_CONFIG;
-   ofstream out(jupyconfig, ios::trunc);
+   ofstream out(jupyconfig, ios::app);
    if (out.is_open()) {
-      out << "import os" << endl;
 #ifdef WIN32
       std::replace( rootbin.begin(), rootbin.end(), '\\', '/');
       std::replace( rootdata.begin(), rootdata.end(), '\\', '/');
       out << "rootbin = '" << rootbin << "'" << endl;
-      string jsrootsys = rootdata + "/js/";
       out << "os.environ['PYTHONPATH']      = '%s' % rootbin + ';' + os.getenv('PYTHONPATH', '')" << endl;
       out << "os.environ['PATH']            = '%s;%s/bin' % (rootbin,rootbin) + ';' + os.getenv('PATH', '')" << endl;
 #else
       out << "rootbin = '" << rootbin << "'" << endl;
       out << "rootlib = '" << rootlib << "'" << endl;
-      string jsrootsys = rootdata + "/js/";
       out << "os.environ['PYTHONPATH']      = '%s' % rootlib + ':' + os.getenv('PYTHONPATH', '')" << endl;
       out << "os.environ['PATH']            = '%s:%s/bin' % (rootbin,rootbin) + ':' + os.getenv('PATH', '')" << endl;
       out << "os.environ['LD_LIBRARY_PATH'] = '%s' % rootlib + ':' + os.getenv('LD_LIBRARY_PATH', '')" << endl;
 #endif
-      out << "c.NotebookApp.extra_static_paths = ['" << jsrootsys << "']" << endl;
       out.close();
       return true;
    }