diff --git a/install/lib/installer_base.lib.php b/install/lib/installer_base.lib.php
index 05ff5e4483e6f653ca60a2e3204fa39ece40b3f0..e0b482293034d7e4c68984ade07e8f74d4f59819 100644
--- a/install/lib/installer_base.lib.php
+++ b/install/lib/installer_base.lib.php
@@ -1552,6 +1552,8 @@ class installer_base {
 			exec("for i in $config_dir/conf/*; do printf \$i\ ; cat \$i; printf '\n'; done 2>&1 >$config_dir/conf/.backup~");
 			//* clean common unused settings
 			exec("rm $config_dir/conf/MinUID $config_dir/conf/PAMAuthentication $config_dir/conf/PureDB $config_dir/conf/UnixAuthentication 2> /dev/null");
+			//* required for ftp traffic stats
+			file_put_contents("$config_dir/conf/AltLog","clf:/var/log/pure-ftpd/transfer.log");
 			//* improves client compatibility
 			file_put_contents("$config_dir/conf/BrokenClientsCompatibility","yes");
 			//* needed for ispconfig implementation