diff --git a/configs/dh_imx6_defconfig b/configs/dh_imx6_defconfig
index 29b07821bf..fa2d7f3d09 100644
--- a/configs/dh_imx6_defconfig
+++ b/configs/dh_imx6_defconfig
@@ -28,6 +28,7 @@ CONFIG_SPL_SPI=y
 CONFIG_AHCI=y
 CONFIG_SYS_MEMTEST_START=0x10000000
 CONFIG_SYS_MEMTEST_END=0x20000000
+CONFIG_LTO=y
 CONFIG_SYS_MONITOR_LEN=409600
 CONFIG_FIT=y
 CONFIG_FIT_VERBOSE=y