diff --git a/pyproject.toml b/pyproject.toml
index c626710..2eaf1bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "meshcore"
-version = "2.1.20"
+version = "2.1.21"
 authors = [
   { name="Florent de Lamotte", email="florent@frizoncorrea.fr" },
   { name="Alex Wolden", email="awolden@gmail.com" },
diff --git a/src/meshcore/commands/messaging.py b/src/meshcore/commands/messaging.py
index fb5ef12..48deb2c 100644
--- a/src/meshcore/commands/messaging.py
+++ b/src/meshcore/commands/messaging.py
@@ -216,7 +216,7 @@ class MessagingCommands(CommandHandlerBase):
         if scope.startswith("#"): # an hash
             logger.debug(f"Setting scope from hash {scope}")
             scope_key = sha256(scope.encode("utf-8")).digest()[0:16]
-        elif scope == "0" or scope == "None": # disable
+        elif scope == "0" or scope == "None" or scope == "*" or scope == "": # disable
             scope_key = b"\0"*16
         else: # assume the key has been sent directly
             scope_key = scope.encode("utf-8")