diff --git a/99-grub-mkconfig.install b/99-grub-mkconfig.install
index e370899..5c5024c 100755
--- a/99-grub-mkconfig.install
+++ b/99-grub-mkconfig.install
@@ -4,10 +4,22 @@ if ! [[ $KERNEL_INSTALL_MACHINE_ID ]]; then
     exit 0
 fi
 
+# A "control_d" string in /proc/xen/capabilities indicates that is a Xen Dom0 host.
+[[ -e /sys/hypervisor/type ]] && read HV_TYPE < /sys/hypervisor/type
+[[ -e /proc/xen/capabilities ]] && grep -q "control_d" /proc/xen/capabilities && XEN_DOM0=true
+
+if [[ $HV_TYPE = "xen" && $XEN_DOM0 != "true" ]]; then
+    if grep -q '^GRUB_ENABLE_BLSCFG="*true"*\s*$' /etc/default/grub; then
+	sed -i 's/^GRUB_ENABLE_BLSCFG=.*/GRUB_ENABLE_BLSCFG=false/' /etc/default/grub
+    fi
+fi
+
 ARCH=$(uname -m)
 
-# Is only needed for ppc64* since we can't assume a BLS capable bootloader there
-if [[ $ARCH != "ppc64" && $ARCH != "ppc64le" ]]; then
+# A traditional grub configuration file needs to be generated only for ppc64le and
+# Xen DomU guests since we can't assume that bootloaders will be BLS capable there.
+if [[ $ARCH != "ppc64" && $ARCH != "ppc64le" ]] ||
+   [[ $HV_TYPE = "xen" && $XEN_DOM0 = "true" ]]; then
     exit 0
 fi
 
diff --git a/grub2.spec b/grub2.spec
index bcb3637..2210c39 100644
--- a/grub2.spec
+++ b/grub2.spec
@@ -7,7 +7,7 @@
 Name:		grub2
 Epoch:		1
 Version:	2.02
-Release:	81%{?dist}
+Release:	82%{?dist}
 Summary:	Bootloader with support for Linux, Multiboot and more
 License:	GPLv3+
 URL:		http://www.gnu.org/software/grub/
@@ -476,6 +476,10 @@ rm -r /boot/grub2.tmp/ || :
 %endif
 
 %changelog
+* Wed Oct 09 2019 Javier Martinez Canillas <javierm@redhat.com> - 2.02-82
+- 99-grub-mkconfig: Disable BLS usage for Xen DomU guests
+  Resolves: rhbz#1703700
+
 * Mon May 20 2019 Javier Martinez Canillas <javierm@redhat.com> - 2.02-81
 - Don't try to switch to a BLS config if GRUB_ENABLE_BLSCFG is already set