diff --git a/ssh_config_backup_targets b/ssh_config_backup_targets
index c64f943..05b600c 100644
--- a/ssh_config_backup_targets
+++ b/ssh_config_backup_targets
@@ -1,3 +1,5 @@
+# NOTE: this file should be included via the `Include` directive in ~/.ssh/config
+
 Host ameno ameno.pvv.ntnu.no
 	User root
 	IdentityFile ~/.ssh/id_rsa