diff --git a/installer/nixos-rebuild.sh b/installer/nixos-rebuild.sh
index 12fae0cc80a..0552c9baaf0 100644
--- a/installer/nixos-rebuild.sh
+++ b/installer/nixos-rebuild.sh
@@ -56,8 +56,8 @@ fi
 if test "$action" = "test"; then
     cat >&2 <<EOF
 
-Warning: if you remove the symlink \`$pathToConfig', the active system
-configuration may be garbage collected!  This may render the system
-inoperable (though a reboot will fix things).
+Warning: if you remove or overwrite the symlink \`$pathToConfig', the
+active system configuration may be garbage collected!  This may render
+the system inoperable (though a reboot will fix things).
 EOF
 fi