diff --git a/bin/start-u9fs.sh b/bin/start-u9fs.sh
index 4d61cb9..591abe7 100755
--- a/bin/start-u9fs.sh
+++ b/bin/start-u9fs.sh
@@ -1,3 +1,8 @@
 #!/bin/sh
-# U9FS_LOG="-l $JEHANNE/hacking/lib/u9fs.log -z -D"
+if [ "$U9FS_LOGGING" = "enable" ]; then
+	LOGFILE=$JEHANNE/hacking/lib/u9fs.log
+	date > $LOGFILE
+	echo Starting U9FS >> $LOGFILE
+	U9FS_LOG="-l $LOGFILE -z -D"
+fi
 $JEHANNE/hacking/bin/u9fs $U9FS_LOG -a none -u $USER $JEHANNE