diff --git a/install.sh b/install.sh
index b3d718e1a1..65e1873e31 100755
--- a/install.sh
+++ b/install.sh
@@ -967,11 +967,11 @@ service_enable_and_start() {
         return
     fi
 
-    if command -v iptables-save &> /dev/null && command -v iptables-restore &> /dev/null
+    if command -v iptables-save 1> /dev/null && command -v iptables-restore 1> /dev/null
     then
 	    $SUDO iptables-save | grep -v KUBE- | grep -v CNI- | grep -iv flannel | $SUDO iptables-restore
     fi
-    if command -v ip6tables-save &> /dev/null && command -v ip6tables-restore &> /dev/null
+    if command -v ip6tables-save 1> /dev/null && command -v ip6tables-restore 1> /dev/null
     then
 	    $SUDO ip6tables-save | grep -v KUBE- | grep -v CNI- | grep -iv flannel | $SUDO ip6tables-restore
     fi