diff --git a/configs/imx6ullevk_defconfig b/configs/imx6ullevk_defconfig
index 4a5558dd6c..81db66268a 100644
--- a/configs/imx6ullevk_defconfig
+++ b/configs/imx6ullevk_defconfig
@@ -23,7 +23,7 @@ BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BOARDNAME="mx6ull_14x14_evk"
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2020.07"
-BR2_TARGET_UBOOT_FORMAT_DTB_IMX=y"
+BR2_TARGET_UBOOT_FORMAT_DTB_IMX=y
 BR2_TARGET_UBOOT_NEEDS_DTC=y
 
 # required tools to create the SD card image