diff --git a/setup/so-functions b/setup/so-functions
index ca8618e53..58f671462 100755
--- a/setup/so-functions
+++ b/setup/so-functions
@@ -1430,7 +1430,7 @@ reinstall_init() {
 		docker rm -f $(docker ps -a -q --filter "name=so-")
 
 		# Backup /opt/so since we'll be rebuilding this directory during setup
-		mv /opt/so /opt/so_old
+		mv /opt/so "/opt/so_old_$(date +%s)"
 
 		# Remove container data directories
 		rm -rf /nsm/mysql