diff --git a/configs/mx31pdk_defconfig b/configs/mx31pdk_defconfig
index bb1f121..59084d7 100644
--- a/configs/mx31pdk_defconfig
+++ b/configs/mx31pdk_defconfig
@@ -1,4 +1,6 @@
 CONFIG_ARM=y
+# CONFIG_SPL_USE_ARCH_MEMCPY is not set
+# CONFIG_SPL_USE_ARCH_MEMSET is not set
 CONFIG_TARGET_MX31PDK=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SPL_NAND_SUPPORT=y