diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index 8068a53..25efb42 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -250,8 +250,10 @@
 
 	header = &__header;
 	ret = read(fd, header, sizeof(*header));
-	if (ret < sizeof(*header))
+	if (ret < 0)
 		return ret;
+	if (ret < sizeof(*header))
+		return -ENXIO;
 
 	if (file_detect_type(header, sizeof(*header)) != filetype_oftree)
 		return -ENXIO;