diff --git a/radicale/tests/static/contact4-with-bday-no-year.vcf b/radicale/tests/static/contact4-with-bday-no-year.vcf
new file mode 100644
index 00000000..106983b0
--- /dev/null
+++ b/radicale/tests/static/contact4-with-bday-no-year.vcf
@@ -0,0 +1,9 @@
+BEGIN:VCARD
+VERSION:3.0
+PRODID:Thunderbird CardBook V105.3//DE
+UID:d0bd27f0-5c7c-4540-b9b6-91314b8361f1
+BDAY:16040101
+FN:Test bday without year Thunderbird CardBook
+N:;;;;
+REV:2026-06-10T04:26:53Z
+END:VCARD