diff --git a/boot/cstuff.c b/boot/cstuff.c
index 47ca6624..38ad5cbd 100644
--- a/boot/cstuff.c
+++ b/boot/cstuff.c
@@ -42,7 +42,7 @@ EFI_HANDLE ImageHandleIn;
 #define DEFAULT_PRESET_VID_CMDLINE "vid=preset "
 #define DEFAULT_NETINIT_CMDLINE "init=/dev/ram0 _"
 #define MIGRATE_CMDLINE "start=--migrate _"
-#define DEBUG_LOG_CMDLINE "logtoserial=3 "
+#define DEBUG_LOG_CMDLINE "logtoserial=warning "
 #define DEBUG_SERIAL_CMDLINE "kdebug "
 #define DEFAULT_HEADLESS_CMDLINE "start=--headless "