diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile
index 2941a915d4efd55b244ba8bbf278ff250c28c606..803cfcc9b346f0a5dda851720421a5236b9a31de 100644
--- a/arch/x86_64/Makefile
+++ b/arch/x86_64/Makefile
@@ -41,9 +41,6 @@ cflags-y += -mno-red-zone
 cflags-y += -mcmodel=kernel
 cflags-y += -pipe
 cflags-kernel-$(CONFIG_REORDER) += -ffunction-sections
-# this makes reading assembly source easier, but produces worse code
-# actually it makes the kernel smaller too.
-cflags-y += -fno-reorder-blocks
 cflags-y += -Wno-sign-compare
 cflags-y += -fno-asynchronous-unwind-tables
 ifneq ($(CONFIG_DEBUG_INFO),y)