diff --git a/Lib/mimetypes.py b/Lib/mimetypes.py
index bacee8ba164b48..a342bcd7901f06 100644
--- a/Lib/mimetypes.py
+++ b/Lib/mimetypes.py
@@ -531,7 +531,6 @@ def _default_mime_types():
         '.aac'    : 'audio/aac',
         '.adts'   : 'audio/aac',
         '.loas'   : 'audio/aac',
-        '.ass'    : 'audio/aac',
         '.au'     : 'audio/basic',
         '.snd'    : 'audio/basic',
         '.mp3'    : 'audio/mpeg',
@@ -588,6 +587,7 @@ def _default_mime_types():
         '.rtf'    : 'text/rtf',
         '.tsv'    : 'text/tab-separated-values',
         '.vtt'    : 'text/vtt',
+        '.ass'    : 'text/x-ass',
         '.py'     : 'text/x-python',
         '.rst'    : 'text/x-rst',
         '.etx'    : 'text/x-setext',
diff --git a/Misc/NEWS.d/next/Core and Builtins/2024-06-08-02-24-28.gh-issue-120258.EwD7PH.rst b/Misc/NEWS.d/next/Core and Builtins/2024-06-08-02-24-28.gh-issue-120258.EwD7PH.rst
new file mode 100644
index 00000000000000..18617afdc17939
--- /dev/null
+++ b/Misc/NEWS.d/next/Core and Builtins/2024-06-08-02-24-28.gh-issue-120258.EwD7PH.rst	
@@ -0,0 +1 @@
+Correct MIME type for Advanced SubStation files.