diff --git a/instance.ts b/instance.ts
index 0645ab1..6d5a1e1 100644
--- a/instance.ts
+++ b/instance.ts
@@ -18,12 +18,11 @@ const SAVE_LINE_RE = /Saving to (.+?) \((?:non-)?blocking\)\./;
 // Factorio's autosaves are literally named '_autosave1'..'_autosaveN'.
 const AUTOSAVE_NAME_RE = /^_autosave(\d+)$/;
 
-function parse_save(line: string): {name: string, slot?: number} | null {
+function parse_save(line: string): slot?: number | null {
     const m = SAVE_LINE_RE.exec(line);
     if (!m) return null;
-
     const slot = AUTOSAVE_NAME_RE.exec(m[1]);
-    return {name: m[1], slot: slot ? Number(slot[1]) : undefined};
+    return slot ? Number(slot[1]) : undefined;
 }
 
 export default async function(context: InstancePluginContext) {