diff --git a/test.tf b/test.tf
index 0206427..77dc7d1 100644
--- a/test.tf
+++ b/test.tf
@@ -2,8 +2,8 @@ locals {
   main_countries = ["FR"]
   all_countries  = ["FR", "DE", "ES"]
 
-  blocked_countries_except_main = [
-    for code in local.all_countries : code
-    if not (code in local.main_countries)
-  ]
+  blocked_countries_except_main = compact([
+    for code in local.all_countries :
+    (contains(local.main_countries, code) ? null : code)
+  ])
 }
\ No newline at end of file