diff --git a/xorriso/xorriso.1 b/xorriso/xorriso.1
index a432296e..6e2aa32d 100644
--- a/xorriso/xorriso.1
+++ b/xorriso/xorriso.1
@@ -1104,7 +1104,7 @@ size is not limited by xorriso. Default is a limit of 100 extents, 4g -2k each:
 When mounting ISO 9660 filesystems, old operating systems can handle only files
 up to 2g -1 --. Newer ones are good up to 4g -1 --.
 You need quite a new Linux kernel to read correctly the final bytes
-of a file >= 4g if its size is not aligned to 2048 KiB.
+of a file >= 4g if its size is not aligned to 2048 byte blocks.
 .br
 xorriso's own data read capabilities are not affected by eventual
 operating system size limits. They apply to mounting only. Nevertheless,