diff --git a/src/utilities/save-utility.ts b/src/utilities/save-utility.ts
index 8f3eb4d..340c7d2 100644
--- a/src/utilities/save-utility.ts
+++ b/src/utilities/save-utility.ts
@@ -27,7 +27,7 @@ export async function putSaveIntoIndexDB(info: Partial<GameSaveData> & { id?: nu
         image: image,
         ...info,
     }
-    if (!item.id) {
+    if (item.id === undefined) {
         let lastSave = await getLastRowFromIndexDB<GameSaveData & { id: number }>(INDEXED_DB_SAVE_TABLE)
         if (lastSave) {
             item.id = lastSave.id + 1