diff --git a/src/planner/darwin/multi.rs b/src/planner/darwin/multi.rs
index 492007e..f708383 100644
--- a/src/planner/darwin/multi.rs
+++ b/src/planner/darwin/multi.rs
@@ -21,7 +21,7 @@ pub struct DarwinMulti {
     /// Force encryption on the volume
     #[clap(
         long,
-        action(ArgAction::SetTrue),
+        action(ArgAction::Set),
         default_value = "false",
         env = "HARMONIC_ENCRYPT"
     )]