diff --git a/qemu-img.texi b/qemu-img.texi
index 69e24b598f..ae8ca922e0 100644
--- a/qemu-img.texi
+++ b/qemu-img.texi
@@ -37,6 +37,12 @@ Linux or NTFS on Windows), then only the written sectors will reserve
 space. Use @code{qemu-img info} to know the real size used by the
 image or @code{ls -ls} on Unix/Linux.
 
+@item host_device
+
+Host device format. This format should be used instead of raw when
+converting to block devices or other devices where "holes" are not
+supported.
+
 @item qcow2
 QEMU image format, the most versatile format. Use it to have smaller
 images (useful if your filesystem does not supports holes, for example