diff --git a/config/boards/radxa-zero3.conf b/config/boards/radxa-zero3.conf
index 3ea786ba97ff..3eaabcada294 100644
--- a/config/boards/radxa-zero3.conf
+++ b/config/boards/radxa-zero3.conf
@@ -13,7 +13,7 @@ BOOTFS_TYPE="fat"
 
 
 function post_family_config_branch_edge__use_mainline_dtb_name() {
-	BOOT_FDT_FILE="rockchip/rk3566-radxa-zero-3e.dtb"
+	unset BOOT_FDT_FILE
 }
 
 # Override family config for this board; let's avoid conditionals in family config.