diff --git a/sys/boot/uboot/fdt/uboot_fdt.c b/sys/boot/uboot/fdt/uboot_fdt.c
index 5caef8f..cc8c025 100644
--- a/sys/boot/uboot/fdt/uboot_fdt.c
+++ b/sys/boot/uboot/fdt/uboot_fdt.c
@@ -75,7 +75,11 @@ fdt_platform_load_dtb(void)
 	 * If the U-boot environment contains a variable giving the name of a
 	 * file, use it if we can load and validate it.
 	 */
-	s = ub_env_get("fdtfile");
+	s = getenv("fdtfile");
+	if (s == NULL)
+		s = getenv("fdt_file");
+	if (s == NULL)
+		s = ub_env_get("fdtfile");
 	if (s == NULL)
 		s = ub_env_get("fdt_file");
 	if (s != NULL && *s != '\0') {