diff --git a/radicale/app/propfind.py b/radicale/app/propfind.py
index f366f956..4ba26020 100644
--- a/radicale/app/propfind.py
+++ b/radicale/app/propfind.py
@@ -159,7 +159,7 @@ def xml_propfind_response(
         if uri.startswith(share['PathMapped']):
             uri = str(share['PathOrToken']) + uri.removeprefix(share['PathMapped'])
         if share_bday_automap and uri.endswith(".vcf"):
-            uri = uri.rstrip(".vcf") + ".ics"
+            uri = uri.removesuffix(".vcf") + ".ics"
 
     href.text = xmlutils.make_href(base_prefix, uri)
     response.append(href)
diff --git a/radicale/item/__init__.py b/radicale/item/__init__.py
index edbe008d..a3fea54f 100644
--- a/radicale/item/__init__.py
+++ b/radicale/item/__init__.py
@@ -592,7 +592,7 @@ class Item:
 
         href = self.href
         if href is not None:
-            href = href.rstrip(".vcf") + ".ics"
+            href = href.removesuffix(".vcf") + ".ics"
 
         etag = self.etag
         # replace 14 leading chars of etag "<hexdigits>" by special format bda0YYYYMMDD00