diff --git a/configs/nitrogen8m_som_2g_defconfig b/configs/nitrogen8m_som_2g_defconfig
index c3e651734f4f7a733a221e6aa36106652f7fa920..5bb376a9874139281f303d5b6e2fa4b44c19af28 100644
--- a/configs/nitrogen8m_som_2g_defconfig
+++ b/configs/nitrogen8m_som_2g_defconfig
@@ -18,7 +18,8 @@ CONFIG_DISTRO_DEFAULTS=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_SPL_LOAD_FIT=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg,DDR_MB=2048,DEFCONFIG=\"nitrogen8m_som_2g\""
+CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/imx8m/imximage.cfg,DDR_MB=2048,DEFCONFIG=\"nitrogen8m_som_2g\""
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_SPL_POWER_SUPPORT=y
diff --git a/configs/nitrogen8m_som_4g_defconfig b/configs/nitrogen8m_som_4g_defconfig
index 7504c4f92f1ee03e63ae210683b07795d6f03d52..0319c3907e496c52a21aac4a2a5de37da90b7c3f 100644
--- a/configs/nitrogen8m_som_4g_defconfig
+++ b/configs/nitrogen8m_som_4g_defconfig
@@ -18,7 +18,8 @@ CONFIG_DISTRO_DEFAULTS=y
 CONFIG_NR_DRAM_BANKS=1
 CONFIG_FIT=y
 CONFIG_SPL_LOAD_FIT=y
-CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/spl_sd.cfg,DDR_MB=4096,DEFCONFIG=\"nitrogen8m_som_4g\""
+CONFIG_SPL_FIT_GENERATOR="arch/arm/mach-imx/mkimage_fit_atf.sh"
+CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/mach-imx/imx8m/imximage.cfg,DDR_MB=4096,DEFCONFIG=\"nitrogen8m_som_4g\""
 CONFIG_SPL_BOARD_INIT=y
 CONFIG_SPL_I2C_SUPPORT=y
 CONFIG_SPL_POWER_SUPPORT=y