diff --git a/NGCP/CDR/Transfer.pm b/NGCP/CDR/Transfer.pm
index 471ceb5..2af1074 100644
--- a/NGCP/CDR/Transfer.pm
+++ b/NGCP/CDR/Transfer.pm
@@ -12,7 +12,7 @@ sub sftp_sh {
     print "### transferring $src to $user\@$host:$port at $dir/$fname via sftp-sh\n";
 
     my $fh = File::Temp->new(UNLINK => 1);
-    print $fh "cd $dir\nput $src $fname";
+    print $fh "cd '$dir'\nput '$src' $fname";
     my $cmd = "/usr/bin/sftp -b ".$fh->filename." -P $port -i $key $user\@$host";
     print "### using command $cmd\n";