1 files changed, 6 insertions, 2 deletions

diff --git a/src/mailman_pgp/model/list.py b/src/mailman_pgp/model/list.py
index 0163026..a0101a7 100644
--- a/src/mailman_pgp/model/list.py
+++ b/src/mailman_pgp/model/list.py
@@ -17,6 +17,7 @@
 
 """Model for PGP enabled mailing lists."""
 
+from os import remove
 from os.path import exists, isfile, join
 
 from flufl.lock import Lock
@@ -99,8 +100,11 @@ class PGPMailingList(Base):
     def key(self, value):
         with Lock(self.key_path + '.lock'):
             self._key = value
-            with open(self.key_path, 'w') as key_file:
-                key_file.write(str(value))
+            if value is None:
+                remove(self.key_path)
+            else:
+                with open(self.key_path, 'w') as key_file:
+                    key_file.write(str(value))
 
     def generate_key(self, block=False):
         self._key = None