diff --git a/configs/haleakala_defconfig b/configs/haleakala_defconfig
index 9e3d16d..c8a72f6 100644
--- a/configs/haleakala_defconfig
+++ b/configs/haleakala_defconfig
@@ -18,6 +18,7 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_SNTP=y
+CONFIG_CMD_DIAG=y
 # CONFIG_MMC is not set
 CONFIG_MTD_NOR_FLASH=y
 CONFIG_SYS_NS16550=y