diff --git a/libs/base/src/fs.rs b/libs/base/src/fs.rs
index 96f377200..1adb59077 100644
--- a/libs/base/src/fs.rs
+++ b/libs/base/src/fs.rs
@@ -1106,6 +1106,9 @@ impl TransferJob {
     }
 
     async fn set_stream_offset(&mut self, file_num: usize, offset: u64) {
+        if file_num >= self.files.len() {
+            return;
+        }
         if let DataSource::FilePath(p) = &self.data_source {
             let entry = &self.files[file_num];
             let Some(path) = self.resolve_entry_path(p, &entry.name) else {