diff --git a/pkg/debian/kernel/ubuntu.config b/pkg/debian/kernel/ubuntu.config
index ab74946a3..5b8d7898a 100644
--- a/pkg/debian/kernel/ubuntu.config
+++ b/pkg/debian/kernel/ubuntu.config
@@ -22,6 +22,7 @@
 ##
 
 CONFIG_SYSTEM_TRUSTED_KEYS=""
+CONFIG_SYSTEM_REVOCATION_KEYS=""
 
 ##
 ## Additional options from upstream (not in PPA)