diff --git a/types/html-minifier-terser/html-minifier-terser-tests.ts b/types/html-minifier-terser/html-minifier-terser-tests.ts
index fffd6d6c21..dfd600c382 100644
--- a/types/html-minifier-terser/html-minifier-terser-tests.ts
+++ b/types/html-minifier-terser/html-minifier-terser-tests.ts
@@ -13,7 +13,7 @@ const result = minify('<p title="blah" id="moo">foo</p>', {
     customEventAttributes: [/on-click/],
     decodeEntities: true,
     html5: false,
-    ignoreCustomComments: [/^!/],
+    ignoreCustomComments: [/^!/, /^\s*#/],
     ignoreCustomFragments: [/<%[\s\S]*?%>/, /<\?[\s\S]\*?\?>/],
     includeAutoGeneratedTags: false,
     keepClosingSlash: false,
diff --git a/types/html-minifier-terser/index.d.ts b/types/html-minifier-terser/index.d.ts
index 32cec6537f..656a6af09b 100644
--- a/types/html-minifier-terser/index.d.ts
+++ b/types/html-minifier-terser/index.d.ts
@@ -1,6 +1,6 @@
-// Type definitions for html-minifier-terser 5.0
+// Type definitions for html-minifier-terser 5.1
 // Project: https://danielruf.github.io/html-minifier-terser/
-// Definitions by: Piotr Błażejewicz (Peter Blazejewicz) <https://github.com/me>
+// Definitions by: Piotr Błażejewicz <https://github.com/peterblazejewicz>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 declare namespace minify {
@@ -72,7 +72,7 @@ declare namespace minify {
         html5?: boolean;
         /**
          * Array of regex'es that allow to ignore certain comments, when matched
-         * @default [/^!/]
+         * @default [ /^!/, /^\s*#/ ]
          */
         ignoreCustomComments?: RegExp[];
         /**