diff --git a/src/validators/i18n/fr.py b/src/validators/i18n/fr.py
index cba93bc1..10a5a2b1 100644
--- a/src/validators/i18n/fr.py
+++ b/src/validators/i18n/fr.py
@@ -13,10 +13,10 @@
 def _ssn_pattern():
     """SSN Pattern."""
     return re.compile(
-        r"^([1,2])"  # gender (1=M, 2=F)
+        r"^([12])"  # gender (1=M, 2=F)
         r"\s(\d{2})"  # year of birth
         r"\s(0[1-9]|1[0-2])"  # month of birth
-        r"\s(\d{2,3}|2[A,B])"  # department of birth
+        r"\s(\d{2,3}|2[AB])"  # department of birth
         r"\s(\d{2,3})"  # town of birth
         r"\s(\d{3})"  # registration number
         r"(?:\s(\d{2}))?$",  # control key (may or may not be provided)
diff --git a/tests/i18n/test_fr.py b/tests/i18n/test_fr.py
index 1e648222..30c1588a 100644
--- a/tests/i18n/test_fr.py
+++ b/tests/i18n/test_fr.py
@@ -34,6 +34,7 @@ def test_returns_true_on_valid_ssn(value: str):
         (None,),
         ("",),
         ("3 84 12 76 451 089 46",),  # wrong gender number
+        (", 84 12 76 451 089",),  # comma is not a valid gender (regex char-class bug)
         ("1 84 12 76 451 089 47",),  # wrong control key
         ("1 84 00 76 451 089",),  # invalid month
         ("1 84 13 76 451 089",),  # invalid month