diff --git a/src/api.js b/src/api.js
index 8017be8..06d1f4e 100644
--- a/src/api.js
+++ b/src/api.js
@@ -133,6 +133,7 @@ const getBucketFiles = async (folderName) => {
     const setup_items = [];
     const dmg_items = [];
     let setup_offset = 0;
+    let dmg_offset = 0;
     for (let i = 0; i < totalCount && i < filteredItems.length; i += 3) {
       const parts = filteredItems[i].name.split("_");
       let item = ret.filter(
@@ -179,12 +180,12 @@ const getBucketFiles = async (folderName) => {
           const dmg_item2 = ret.find((item) => item.key == dmg_key + ".sha256");
           const dmg_item3 = ret.find((item) => item.key == dmg_key + ".sig");
           dmg_items.push([
-            { idx: i + 3 + setup_offset },
+            { idx: i + 3 + dmg_offset },
             dmg_item,
             dmg_item2,
             dmg_item3,
           ]);
-          setup_offset += 3;
+          dmg_offset += 3;
         }
       }
     }