diff --git a/block/vdi.c b/block/vdi.c
index 27737af555b0d6a298ccea2ea1656df5fa0811af..1b2be1af7bfeedf34aa5c879cac7040384afb5da 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -239,7 +239,6 @@ static void vdi_header_to_le(VdiHeader *header)
     cpu_to_le32s(&header->block_extra);
     cpu_to_le32s(&header->blocks_in_image);
     cpu_to_le32s(&header->blocks_allocated);
-    cpu_to_le32s(&header->blocks_allocated);
     uuid_convert(header->uuid_image);
     uuid_convert(header->uuid_last_snap);
     uuid_convert(header->uuid_link);