diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 079add4d5da..ba30652f01a 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -94,6 +94,7 @@ endif
 
 %_defconfig: $(obj)/conf
 	$(Q)$(CPP) -nostdinc -P -I $(srctree) -undef -x assembler-with-cpp $(srctree)/arch/$(SRCARCH)/configs/$@ -o generated_defconfig
+	$(Q)sed -i -e 's/^[[:space:]]//' generated_defconfig
 	$(Q)$< $(silent) --defconfig=generated_defconfig $(Kconfig)
 
 # Added for U-Boot (backward compatibility)