diff --git a/98-kexec.rules.ppc64 b/98-kexec.rules.ppc64
index e7735b3..85fe0b1 100644
--- a/98-kexec.rules.ppc64
+++ b/98-kexec.rules.ppc64
@@ -15,7 +15,9 @@ GOTO="kdump_reload_end"
 
 LABEL="kdump_reload_mem"
 
-RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
+# Don't re-register fadump if /sys/kernel/fadump/hotplug_ready sysfs is set to 1.
+
+RUN+="/bin/sh -c '/usr/bin/systemctl is-active kdump.service || exit 0; ! test -f /sys/kernel/fadump/hotplug_ready || cat /sys/kernel/fadump/hotplug_ready | grep 1 || exit 0; /usr/bin/systemd-run --quiet --no-block /usr/lib/udev/kdump-udev-throttler'"
 
 GOTO="kdump_reload_end"