diff --git a/Mac/Extras.install.py b/Mac/Extras.install.py
index ab1af71dfd8..41bfa53d616 100644
--- a/Mac/Extras.install.py
+++ b/Mac/Extras.install.py
@@ -9,10 +9,9 @@ verbose = 1
 debug = 0
 
 def isclean(name):
-    if name == 'CVS': return 0
-    if name == '.cvsignore': return 0
-    if name == '.DS_store': return 0
-    if name == '.svn': return 0
+    if name in ('CVS', '.cvsignore', '.svn'):
+        return 0
+    if name.lower() == '.ds_store': return 0
     if name.endswith('~'): return 0
     if name.endswith('.BAK'): return 0
     if name.endswith('.pyc'): return 0
diff --git a/Misc/NEWS.d/next/macOS/2022-11-01-10-32-23.gh-issue-98940.W3YzC_.rst b/Misc/NEWS.d/next/macOS/2022-11-01-10-32-23.gh-issue-98940.W3YzC_.rst
new file mode 100644
index 00000000000..18ef0b0e252
--- /dev/null
+++ b/Misc/NEWS.d/next/macOS/2022-11-01-10-32-23.gh-issue-98940.W3YzC_.rst
@@ -0,0 +1 @@
+Fix ``Mac/Extras.install.py`` file filter bug.