diff --git a/src/swab.rs b/src/swab.rs
index 2ea9fcc..4dd0021 100644
--- a/src/swab.rs
+++ b/src/swab.rs
@@ -50,7 +50,7 @@ fn main() -> ExitCode {
 	
 	#[cfg(target_os="openbsd")] {
 		let promises = Promises::new("stdio unveil");
-		if let Err(e) = pledge(Some(promises), None) {
+		if let Err(e) = pledge(Some(promises), Some(Promises::default())) {
 			return err(&argv[0], e, EX_OSERR);
 		}