diff --git a/src/block.c b/src/block.c
index 1762e2a..b4530fc 100644
--- a/src/block.c
+++ b/src/block.c
@@ -162,7 +162,7 @@
     // clip to 1024 cylinders in lchs
     if (cylinders > 1024)
         cylinders = 1024;
-    dprintf(1, "drive %p: PCHS=%u/%d/%d translation=%s LCHS=%d/%d/%d s=%d\n"
+    dprintf(1, "drive %p: PCHS=%u/%d/%d translation=%s LCHS=%d/%d/%d s=%u\n"
             , drive
             , drive->pchs.cylinder, drive->pchs.head, drive->pchs.sector
             , desc
diff --git a/src/hw/blockcmd.c b/src/hw/blockcmd.c
index 0725b46..093c5d7 100644
--- a/src/hw/blockcmd.c
+++ b/src/hw/blockcmd.c
@@ -232,7 +232,7 @@
         return -1;
     }
     drive->sectors = (u64)be32_to_cpu(capdata.sectors) + 1;
-    dprintf(1, "%s blksize=%d sectors=%d\n"
+    dprintf(1, "%s blksize=%d sectors=%u\n"
             , s, drive->blksize, (unsigned)drive->sectors);
 
     // We do not recover from USB stalls, so try to be safe and avoid