diff --git a/relay/database.py b/relay/database.py
index 4f83db0..ad093cd 100644
--- a/relay/database.py
+++ b/relay/database.py
@@ -76,7 +76,7 @@ class RelayDatabase(dict):
 
 		if not self['private-key']:
 			logging.info("No actor keys present, generating 4096-bit RSA keypair.")
-			self.signer = aputils.Signer.new(self.config.keyid, 4096)
+			self.signer = aputils.Signer.new(self.config.keyid, size=4096)
 			self['private-key'] = self.signer.export()
 
 		else: