diff --git a/tools/tools/nanobsd/nanobsd.sh b/tools/tools/nanobsd/nanobsd.sh
index 70c0c5833c4..cd6aa62aef9 100644
--- a/tools/tools/nanobsd/nanobsd.sh
+++ b/tools/tools/nanobsd/nanobsd.sh
@@ -474,7 +474,7 @@ create_i386_diskimage ( ) (
 	# XXX: fill from where ?
 
 	# Create Data slice, if any.
-	if [ $NANO_DATASIZE -gt 0 ] ; then
+	if [ $NANO_DATASIZE -ne 0 ] ; then
 		newfs ${NANO_NEWFS} /dev/${MD}s4
 		# XXX: fill from where ?
 	fi