diff --git a/proxmox-subscription/src/files.rs b/proxmox-subscription/src/files.rs
index 69cddbc5..34951609 100644
--- a/proxmox-subscription/src/files.rs
+++ b/proxmox-subscription/src/files.rs
@@ -8,6 +8,8 @@ use crate::{
     SubscriptionInfo, SubscriptionStatus,
 };
 
+pub const DEFAULT_SIGNING_KEY: &str = "/usr/share/keyrings/proxmox-offline-signing-key.pub";
+
 fn parse_subscription_file(raw: &str) -> Result<Option<SubscriptionInfo>, Error> {
     let mut cfg = raw.lines();