diff --git a/bbsim/values.yaml b/bbsim/values.yaml
index 8d589ed..1cb6db4 100644
--- a/bbsim/values.yaml
+++ b/bbsim/values.yaml
@@ -30,6 +30,8 @@
 onu: 1
 uni: 4
 pots: 0
+injectOmciUnknownAttributes: false
+
 # time that BBSim should wait to emulate an hardware reboot
 oltRebootDelay: 60
 # delay between ONU discovery indication