diff --git a/components/drivers/fdt/src/dtb_load.c b/components/drivers/fdt/src/dtb_load.c
index e3b7f34e8b..f1532f5c08 100644
--- a/components/drivers/fdt/src/dtb_load.c
+++ b/components/drivers/fdt/src/dtb_load.c
@@ -52,6 +52,7 @@ void *dtb_node_load_from_fs(char *dtb_filename)
         if (dtb_node_check(fdt) == RT_FALSE)
         {
             free(fdt);
+            fdt=NULL;
         }
     }