diff --git a/scan.yml b/scan.yml
index ff9b412..511057a 100644
--- a/scan.yml
+++ b/scan.yml
@@ -100,7 +100,7 @@
 #     delegate_to: localhost
 
   - ansible.builtin.set_fact:
-      nc_port_list: "{{ nc_port_list|default([]) + [item.stderr_lines + item.stdout_lines] | join('/')}}"
+      nc_port_list: "{{ nc_port_list|default([]) + [item.stderr_lines + item.stdout_lines] | list | join('/')}}"
     loop: "{{ nc_port.results }}"
 
 #! remove run once when network range > 24