diff --git a/spec/css/comment.hrx b/spec/css/comment.hrx
index bf432a5c7..d16e1a277 100644
--- a/spec/css/comment.hrx
+++ b/spec/css/comment.hrx
@@ -142,6 +142,15 @@ a {
   b: c e;
 }
 
+<===>
+================================================================================
+<===> block/loud/sass/trailing_whitespace/input.sass
+// Regression test for sass/dart-sass#2381
+/* */ 
+
+<===> block/loud/sass/trailing_whitespace/output.css
+/* */
+
 <===>
 ================================================================================
 <===> sourcemap/sourcemappingurl/input.scss