diff --git a/libfdt/fdt_check.c b/libfdt/fdt_check.c
index cca0523..2fd5b61 100644
--- a/libfdt/fdt_check.c
+++ b/libfdt/fdt_check.c
@@ -21,6 +21,8 @@ int fdt_check_full(const void *fdt, size_t bufsize)
 	const char *propname;
 	bool expect_end = false;
 
+	if (can_assume(PERFECT))
+		return 0;
 	if (bufsize < FDT_V1_SIZE)
 		return -FDT_ERR_TRUNCATED;
 	if (bufsize < fdt_header_size(fdt))