diff --git a/zebra-chain/src/orchard/action.rs b/zebra-chain/src/orchard/action.rs
index 78ffefce..7d94d0e4 100644
--- a/zebra-chain/src/orchard/action.rs
+++ b/zebra-chain/src/orchard/action.rs
@@ -29,7 +29,7 @@ pub struct Action {
     /// The nullifier of the input note being spent.
     pub nullifer: note::Nullifier,
     /// The randomized validating key for spendAuthSig,
-    pub rk: redpallas::VerificationKey<SpendAuth>,
+    pub rk: redpallas::VerificationKeyBytes<SpendAuth>,
     /// The 𝑥-coordinate of the note commitment for the output note.
     pub cm_x: pallas::Base,
     /// An encoding of an ephemeral Pallas public key.