diff --git a/src/hru.rs b/src/hru.rs
index 978f261..153032b 100644
--- a/src/hru.rs
+++ b/src/hru.rs
@@ -95,7 +95,7 @@ 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.strerror(), Some(EX_OSERR));
 		}