diff --git a/proxmox-rrd/src/cache.rs b/proxmox-rrd/src/cache.rs
index de682bd0..13571929 100644
--- a/proxmox-rrd/src/cache.rs
+++ b/proxmox-rrd/src/cache.rs
@@ -103,7 +103,10 @@ impl Cache {
     /// * cf=maximum,r=7*86400,n=570 => 10year
     ///
     /// The resulting data file size is about 80KB.
+    #[deprecated(note="Implement in client code")]
     pub fn create_proxmox_backup_default_rrd(dst: DataSourceType) -> Database {
+        use crate::rrd::Archive;
+
         let rra_list = vec![
             // 1 min * 1440 => 1 day
             Archive::new(AggregationFn::Average, 60, 1440),