diff --git a/pbs-datastore/src/backup_info.rs b/pbs-datastore/src/backup_info.rs
index c5f4b72d..d6c67b73 100644
--- a/pbs-datastore/src/backup_info.rs
+++ b/pbs-datastore/src/backup_info.rs
@@ -103,6 +103,19 @@ impl BackupGroup {
         Ok(list)
     }
 
+    /// Finds the latest backup inside a backup group
+    pub fn last_backup(
+        &self,
+        base_path: &Path,
+        only_finished: bool,
+    ) -> Result<Option<BackupInfo>, Error> {
+        let backups = self.list_backups(base_path)?;
+        Ok(backups
+            .into_iter()
+            .filter(|item| !only_finished || item.is_finished())
+            .max_by_key(|item| item.backup_dir.backup_time()))
+    }
+
     pub fn last_successful_backup(&self, base_path: &Path) -> Result<Option<i64>, Error> {
         let mut last = None;
 
@@ -363,19 +376,6 @@ impl BackupInfo {
         })
     }
 
-    /// Finds the latest backup inside a backup group
-    pub fn last_backup(
-        base_path: &Path,
-        group: &BackupGroup,
-        only_finished: bool,
-    ) -> Result<Option<BackupInfo>, Error> {
-        let backups = group.list_backups(base_path)?;
-        Ok(backups
-            .into_iter()
-            .filter(|item| !only_finished || item.is_finished())
-            .max_by_key(|item| item.backup_dir.backup_time()))
-    }
-
     pub fn sort_list(list: &mut Vec<BackupInfo>, ascendending: bool) {
         if ascendending {
             // oldest first
diff --git a/src/api2/backup/mod.rs b/src/api2/backup/mod.rs
index febe79d1..c01259d1 100644
--- a/src/api2/backup/mod.rs
+++ b/src/api2/backup/mod.rs
@@ -21,7 +21,7 @@ use pbs_api_types::{
     DATASTORE_SCHEMA, PRIV_DATASTORE_BACKUP,
 };
 use pbs_config::CachedUserInfo;
-use pbs_datastore::backup_info::{BackupDir, BackupGroup, BackupInfo};
+use pbs_datastore::backup_info::{BackupDir, BackupGroup};
 use pbs_datastore::index::IndexFile;
 use pbs_datastore::manifest::{archive_type, ArchiveType};
 use pbs_datastore::{DataStore, PROXMOX_BACKUP_PROTOCOL_ID_V1};
@@ -134,7 +134,8 @@ fn upgrade_to_backup_protocol(
         }
 
         let last_backup = {
-            let info = BackupInfo::last_backup(&datastore.base_path(), &backup_group, true)
+            let info = backup_group
+                .last_backup(&datastore.base_path(), true)
                 .unwrap_or(None);
             if let Some(info) = info {
                 let (manifest, _) = datastore.load_manifest(&info.backup_dir)?;