diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index 1eb09ee5311b414e448b28eb26a72f7ff6bbaa1c..a8287b49d0621d1778295ad0516c8ccbf22ed0fa 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -222,11 +222,16 @@ static int is_pmbr_valid(legacy_mbr *mbr, sector_t total_sectors)
 	 * the disk size.
 	 *
 	 * Hybrid MBRs do not necessarily comply with this.
+	 *
+	 * Consider a bad value here to be a warning to support dd'ing
+	 * an image from a smaller disk to a larger disk.
 	 */
 	if (ret == GPT_MBR_PROTECTIVE) {
 		sz = le32_to_cpu(mbr->partition_record[part].size_in_lba);
 		if (sz != (uint32_t) total_sectors - 1 && sz != 0xFFFFFFFF)
-			ret = 0;
+			pr_debug("GPT: mbr size in lba (%u) different than whole disk (%u).\n",
+				 sz, min_t(uint32_t,
+					   total_sectors - 1, 0xFFFFFFFF));
 	}
 done:
 	return ret;