diff --git a/rules/windows/builtin/win_vul_cve_2021_41379yml b/rules/windows/builtin/win_vul_cve_2021_41379.yml
similarity index 100%
rename from rules/windows/builtin/win_vul_cve_2021_41379yml
rename to rules/windows/builtin/win_vul_cve_2021_41379.yml