diff --git a/target/linux/loongarch64/base-files.mk b/target/linux/loongarch64/base-files.mk
index e2b7d05f5..88ba97d38 100644
--- a/target/linux/loongarch64/base-files.mk
+++ b/target/linux/loongarch64/base-files.mk
@@ -1,6 +1,6 @@
-GRUB_SERIAL:=$(call qstrip,$(CONFIG_TARGET_SERIAL))
+GRUB_SERIAL:=$(call qstrip,$(CONFIG_GRUB_SERIAL))
 ifeq ($(GRUB_SERIAL),)
-$(error This platform requires CONFIG_TARGET_SERIAL be set!)
+$(error This platform requires CONFIG_GRUB_SERIAL be set!)
 endif
 
 define Package/base-files/install-target
diff --git a/target/linux/loongarch64/image/Makefile b/target/linux/loongarch64/image/Makefile
index db0d7a4d8..c9e5d60c5 100644
--- a/target/linux/loongarch64/image/Makefile
+++ b/target/linux/loongarch64/image/Makefile
@@ -16,7 +16,7 @@ ifneq ($(CONFIG_GRUB_CONSOLE),)
   GRUB_TERMINALS += console
 endif
 
-GRUB_SERIAL:=$(call qstrip,$(CONFIG_TARGET_SERIAL))
+GRUB_SERIAL:=$(call qstrip,$(CONFIG_GRUB_SERIAL))
 
 GRUB_CONSOLE_CMDLINE += console=$(GRUB_SERIAL),$(CONFIG_GRUB_BAUDRATE)n8$(if $(CONFIG_GRUB_FLOWCONTROL),r,)
 GRUB_SERIAL_CONFIG := serial --unit=0 --speed=$(CONFIG_GRUB_BAUDRATE) --word=8 --parity=no --stop=1 --rtscts=$(if $(CONFIG_GRUB_FLOWCONTROL),on,off)