diff --git a/configs/yosemite_defconfig b/configs/yosemite_defconfig
index f185a4c..237a7ca 100644
--- a/configs/yosemite_defconfig
+++ b/configs/yosemite_defconfig
@@ -19,6 +19,7 @@
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_FAT=y
+CONFIG_CMD_DIAG=y
 CONFIG_MAC_PARTITION=y
 CONFIG_ISO_PARTITION=y
 # CONFIG_MMC is not set