diff --git a/lib/routes/nhentai/util.js b/lib/routes/nhentai/util.js
index 83d3e4b4f..dba2af215 100644
--- a/lib/routes/nhentai/util.js
+++ b/lib/routes/nhentai/util.js
@@ -91,7 +91,7 @@ const parseSimpleDetail = ($ele) => {
     const link = resolve('https://nhentai.net', $ele.attr('href'));
     const thumb = $ele.children('img');
     const thumbSrc = thumb.attr('data-src') || thumb.attr('src');
-    const highResoThumbSrc = thumbSrc.replace('thumb', '1').replace('t.nhentai.net', 'i.nhentai.net');
+    const highResoThumbSrc = thumbSrc.replace('thumb', '1').replace(/t\d+\.nhentai\.net/, 'i.nhentai.net');
     return {
         title: $ele.children('.caption').text(),
         link,
@@ -121,7 +121,7 @@ const getDetail = async (simple) => {
         .map((_, ele) => resolve('https://nhentai.net', $(ele).attr('data-src')))
         .get()
         .map((src) => src.replace(/(.+)(\d+)t\.(.+)/, (_, p1, p2, p3) => `${p1}${p2}.${p3}`)) // thumb to high-quality
-        .map((src) => src.replace('t.nhentai.net', 'i.nhentai.net'));
+        .map((src) => src.replace(/t\d+\.nhentai\.net/, 'i.nhentai.net'));
 
     const renderImg = (src) => `<img src="${src}" /><br />`;
     return {