diff --git a/package-lock.json b/package-lock.json
index bd78de8..0f87222 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@fogtype/gadl",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@fogtype/gadl",
-      "version": "1.6.0",
+      "version": "1.6.1",
       "license": "AGPL-3.0",
       "dependencies": {
         "fflate": "^0.8.1",
diff --git a/package.json b/package.json
index 6aae56f..dcac3b8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@fogtype/gadl",
-  "version": "1.6.0",
+  "version": "1.6.1",
   "license": "AGPL-3.0",
   "type": "module",
   "bin": "bin/run.js",
diff --git a/platforms/dlsite-maniax.ts b/platforms/dlsite-maniax.ts
index 83b2c87..7cc8529 100644
--- a/platforms/dlsite-maniax.ts
+++ b/platforms/dlsite-maniax.ts
@@ -23,16 +23,14 @@ function Reader(page: PageOrFrame, readerUrl: string) {
       await page.goto(readerUrl);
     },
     async downloadUrl(): Promise<null | string> {
-      const isBook = workId.startsWith("B");
+      const url = `https://www.dlsite.com/home/download/=/product_id/${workId}.html`;
 
-      if (isBook) {
-        // PDFファイルでないことを確認
-        const items = await page.waitForSelector(workTreeItemsSelector);
-        const text = await items.textContent();
-        if (!text?.match(/PDFファイル/u)) return null;
-      }
+      if (!workId.startsWith("B")) return url;
 
-      return `https://www.dlsite.com/home/download/=/product_id/${workId}.html`;
+      const items = await page.waitForSelector(workTreeItemsSelector);
+      const text = await items.textContent();
+
+      return text?.match(/画像/) ? null : url;
     },
   };
 }