diff --git a/src/api2/admin/datastore.rs b/src/api2/admin/datastore.rs
index b0c74419..2e929ac1 100644
--- a/src/api2/admin/datastore.rs
+++ b/src/api2/admin/datastore.rs
@@ -172,15 +172,28 @@ fn list_snapshots (
         if let Some(backup_type) = backup_type {
             if backup_type != group.backup_type() { continue; }
         }
-       if let Some(backup_id) = backup_id {
+        if let Some(backup_id) = backup_id {
             if backup_id != group.backup_id() { continue; }
         }
-        snapshots.push(json!({
+
+        let mut result_item = json!({
             "backup-type": group.backup_type(),
             "backup-id": group.backup_id(),
             "backup-time": info.backup_dir.backup_time().timestamp(),
             "files": info.files,
-        }));
+        });
+
+        if let Ok(index) = read_backup_index(&datastore, &info.backup_dir) {
+            let mut backup_size = 0;
+            for item in index.as_array().unwrap().iter() {
+                if let Some(item_size) = item["size"].as_u64() {
+                    backup_size += item_size;
+                }
+            }
+            result_item["size"] = backup_size.into();
+        }
+
+        snapshots.push(result_item);
     }
 
     Ok(json!(snapshots))
diff --git a/src/bin/proxmox-backup-client.rs b/src/bin/proxmox-backup-client.rs
index 907e6d7f..7ef1511d 100644
--- a/src/bin/proxmox-backup-client.rs
+++ b/src/bin/proxmox-backup-client.rs
@@ -335,14 +335,23 @@ fn list_snapshots(
             .map(|v|  strip_server_file_expenstion(v.as_str().unwrap())).collect();
 
         if output_format == "text" {
-            println!("{} | {}", path, tools::join(&files, ' '));
+            let size_str = if let Some(size) = item["size"].as_u64() {
+                size.to_string()
+            } else {
+                String::from("-")
+            };
+            println!("{} | {} | {}", path, size_str, tools::join(&files, ' '));
         } else {
-            result.push(json!({
+            let mut data = json!({
                 "backup-type": btype,
                 "backup-id": id,
                 "backup-time": epoch,
                 "files": files,
-            }));
+            });
+            if let Some(size) = item["size"].as_u64() {
+                data["size"] = size.into();
+            }
+            result.push(data);
         }
     }