diff --git a/install.sh b/install.sh
index b504d9f..ab91868 100755
--- a/install.sh
+++ b/install.sh
@@ -148,7 +148,7 @@ fi
 sleep 2
 
 if [ $LXC_MP -gt 0 ]; then
-  pct set $LXC_NBR -mp0 $LXC_SHAREFS_STORAGE:$LXC_SHAREFS_SIZE,mp=/$LXC_SHAREFS_MOUNTPOINT
+  pct set $LXC_NBR -mp0 $LXC_SHAREFS_STORAGE:$LXC_SHAREFS_SIZE,backup=1,mp=/$LXC_SHAREFS_MOUNTPOINT
 fi
 sleep 2;
 
@@ -182,4 +182,4 @@ if [[ $service == "zmb-ad" ]]; then
 elif [[ $service == "zmb-ad-join" ]]; then
   pct set $LXC_NBR -nameserver "${LXC_IP%/*} $LXC_DNS"
 fi
-pct start $LXC_NBR
\ No newline at end of file
+pct start $LXC_NBR