diff --git a/Makefile b/Makefile
index 1af94cf..5c02a39 100644
--- a/Makefile
+++ b/Makefile
@@ -619,7 +619,7 @@ else
   stackp-flag := $(call cc-option, -fno-stack-protector)
 endif
 endif
-KBUILD_CFLAGS += $(stackp-flag)
+KBUILD_CFLAGS += -fstack-protector-all

 # This warning generated too much noise in a regular build.
 # Use make W=1 to enable this warning (see scripts/Makefile.build)