diff --git a/block/iscsi.c b/block/iscsi.c
index 5f28c6a2eaed..e7c1c2b538d0 100644
--- a/block/iscsi.c
+++ b/block/iscsi.c
@@ -247,7 +247,9 @@ static bool is_request_lun_aligned(int64_t sector_num, int nb_sectors,
 {
     if ((sector_num * BDRV_SECTOR_SIZE) % iscsilun->block_size ||
         (nb_sectors * BDRV_SECTOR_SIZE) % iscsilun->block_size) {
-            error_report("iSCSI misaligned request: iscsilun->block_size %u, sector_num %ld, nb_sectors %d",
+            error_report("iSCSI misaligned request: "
+                         "iscsilun->block_size %u, sector_num %" PRIi64
+                         ", nb_sectors %d",
                          iscsilun->block_size, sector_num, nb_sectors);
             return 0;
     }