diff --git a/radicale/rights/__init__.py b/radicale/rights/__init__.py
index 7a2d881e..2e51fe0b 100644
--- a/radicale/rights/__init__.py
+++ b/radicale/rights/__init__.py
@@ -35,8 +35,6 @@ Permissions:
   - t: deny create of token-based sharing of collection in case permit_create_token=True (>= 3.7.0)
   - M: permit create of map-based sharing of collection in case permit_create_map=False (>= 3.7.0)
   - m: deny create of map-based sharing of collection in case permit_create_map=True (>= 3.7.0)
-  - B: permit create of bday-based sharing of addressbook collection in case permit_create_bday=False (>= 3.7.0)
-  - b: deny create of bday-based sharing of addressbook collection in case permit_create_bday=True (>= 3.7.0)
 
 Permissions only supported so far in share permissions:
   - P: permit properties overlay in case permit_properties_overlay=False (>= 3.7.0)
@@ -55,7 +53,7 @@ from radicale import config, utils
 INTERNAL_TYPES: Sequence[str] = ("authenticated", "owner_write", "owner_only",
                                  "from_file")
 
-INTERNAL_PERMISSIONS: str = "RriWwDdOoTtMmPpEeBb"
+INTERNAL_PERMISSIONS: str = "RriWwDdOoTtMmPpEe"
 
 
 def load(configuration: "config.Configuration") -> "BaseRights":