diff --git a/arch/nds32/Makefile b/arch/nds32/Makefile
index 797ad9b450af..b33d5d81b6ae 100644
--- a/arch/nds32/Makefile
+++ b/arch/nds32/Makefile
@@ -31,12 +31,6 @@ core-y				+= arch/nds32/kernel/ arch/nds32/mm/
 core-$(CONFIG_FPU)              += arch/nds32/math-emu/
 libs-y				+= arch/nds32/lib/
 
-ifneq '$(CONFIG_NDS32_BUILTIN_DTB)' '""'
-BUILTIN_DTB := y
-else
-BUILTIN_DTB := n
-endif
-
 ifdef CONFIG_CPU_LITTLE_ENDIAN
 KBUILD_CFLAGS   += $(call cc-option, -EL)
 KBUILD_AFLAGS   += $(call cc-option, -EL)