1 files changed, 2 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 3b5db90..63b006e 100644
--- a/Makefile
+++ b/Makefile
@@ -1804,7 +1804,8 @@ ENV_FILE := $(if $(ENV_SOURCE_FILE),$(ENV_FILE_CFG),$(wildcard $(ENV_FILE_BOARD)
 quiet_cmd_gen_envp = ENVP    $@
       cmd_gen_envp = \
 	if [ -s "$(ENV_FILE)" ]; then \
-		$(CPP) -P $(CFLAGS) -x assembler-with-cpp -D__ASSEMBLY__ \
+		$(CPP) -P $(CFLAGS) -x assembler-with-cpp -undef \
+			-D__ASSEMBLY__ \
 			-D__UBOOT_CONFIG__ \
 			-I . -I include -I $(srctree)/include \
 			-include linux/kconfig.h -include include/config.h \