diff --git a/tf_config/rk3399-default b/tf_config/rk3399-default
index 9a27e0c..56cee02 100644
--- a/tf_config/rk3399-default
+++ b/tf_config/rk3399-default
@@ -1,2 +1,3 @@
 CROSS_COMPILE=aarch64-none-elf-
+ENABLE_STACK_PROTECTOR=strong
 PLAT=rk3399