diff --git a/configs/ea20_defconfig b/configs/ea20_defconfig
index 2e97bc4..be48626 100644
--- a/configs/ea20_defconfig
+++ b/configs/ea20_defconfig
@@ -25,6 +25,7 @@
 CONFIG_CMD_MII=y
 CONFIG_CMD_PING=y
 CONFIG_CMD_BMP=y
+CONFIG_CMD_DIAG=y
 CONFIG_CMD_UBI=y
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y