diff --git a/config/xen-image/README b/config/xen-image/README
index 531867311..49a28e2ad 100644
--- a/config/xen-image/README
+++ b/config/xen-image/README
@@ -21,5 +21,5 @@ other usefull commands from the Dom0:
 
 This script can also build a Citrix XenCenter xva image. (Need xz-aware
 xen version. Tested with Citrix Xen Server 6.2.5 beta)
-- run "XEN_IMG_TYPE=xva sh xen-image-maker.sh" to build an xva image.
+- run "XEN_IMG_TYPE=xva bash xen-image-maker.sh" to build an xva image.
 - import the vm with "xe vm-import file=ipfire.xfa"