diff --git a/xorriso/write_run.c b/xorriso/write_run.c
index a2081d74..c356f273 100644
--- a/xorriso/write_run.c
+++ b/xorriso/write_run.c
@@ -3314,7 +3314,7 @@ int Xorriso_update_iso_lba0(struct XorrisO *xorriso,
    }
  } else {
    /* This is a regular superblock relocation. Write full 64 kB. */
-   ret= Xorriso_overwrite_iso_head(xorriso, drive, head_buffer, 0, 0);
+   ret= Xorriso_overwrite_iso_head(xorriso, drive, head_buffer, (off_t) 0, 0);
    if(ret <= 0)
      return(ret);
  }
@@ -3563,7 +3563,8 @@ no_ctx:;
    }
  }
 
- ret= Xorriso_overwrite_iso_head(xorriso, drive, head_buffer, iso_lba, 0);
+ ret= Xorriso_overwrite_iso_head(xorriso, drive, head_buffer, (off_t) iso_lba,
+                                 0);
  if(ret <= 0)
    goto ex;
 
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index c100b386..22932975 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2024.03.23.173025"
+#define Xorriso_timestamP "2024.03.23.174931"