diff --git a/etc/rc.d/rc.libvirt b/etc/rc.d/rc.libvirt
index e41bc61b6..6299cd411 100755
--- a/etc/rc.d/rc.libvirt
+++ b/etc/rc.d/rc.libvirt
@@ -198,7 +198,7 @@ libvirtd_start(){
       sed -ri "/<watchdog model='itco' action='reset'\/>/d" "$XML"
     fi
     # get all interface sections
-    ROW=($(grep -nhP '<interface type=' "$XML" | grep -Pom1 '^[0-9]+'))
+    ROW=($(grep -nhP '<interface type=' "$XML" | grep -Po '^[0-9]+'))
     # get all source sections
     CAT=($(grep -nhP '<source (bridge|dev)=' "$XML" | awk '{print $1$3}'))
     for i in ${!ROW[@]}; do