diff --git a/board/boundary/nitrogen6x/nitrogen6q.cfg b/board/boundary/nitrogen6x/nitrogen6q.cfg
index b6642e6..60e1885 100644
--- a/board/boundary/nitrogen6x/nitrogen6q.cfg
+++ b/board/boundary/nitrogen6x/nitrogen6q.cfg
@@ -20,6 +20,9 @@
 
 #define __ASSEMBLY__
 #include <config.h>
+#ifdef CONFIG_SECURE_BOOT
+CSF CONFIG_CSF_SIZE
+#endif
 #include "asm/arch/mx6-ddr.h"
 #include "asm/arch/iomux.h"
 #include "asm/arch/crm_regs.h"