diff --git a/agent/sim/core.h b/agent/sim/core.h
index ed0fb4d..32d671d 100644
--- a/agent/sim/core.h
+++ b/agent/sim/core.h
@@ -26,7 +26,7 @@
 
 Status Enable_(int argc, char *argv[]);
 Status ActivateOnu_(uint32_t intf_id, uint32_t onu_id,
-    const char *vendor_id, const char *vendor_specific, uint32_t pir);
+    const char *vendor_id, const char *vendor_specific, uint32_t pir, bool omcc_encryption_mode);
 Status DeactivateOnu_(uint32_t intf_id, uint32_t onu_id,
     const char *vendor_id, const char *vendor_specific);
 Status DeleteOnu_(uint32_t intf_id, uint32_t onu_id,