diff --git a/patches/systemvm/debian/config/etc/init.d/cloud-early-config b/patches/systemvm/debian/config/etc/init.d/cloud-early-config
index d847c2470a6..88ecc119b61 100755
--- a/patches/systemvm/debian/config/etc/init.d/cloud-early-config
+++ b/patches/systemvm/debian/config/etc/init.d/cloud-early-config
@@ -848,7 +848,7 @@ setup_redundant_router() {
     crontab -l|grep "check_heartbeat.sh"
     if [ $? -ne 0 ]
     then
-        (crontab -l; echo "*/1 * * * * $rrouter_bin_path/check_heartbeat.sh 2>&1 > /dev/null") | crontab
+        (crontab -l; echo -e "SHELL=/bin/bash\nPATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin\n*/1 * * * * $rrouter_bin_path/check_heartbeat.sh 2>&1 > /dev/null") | crontab
     fi
 }
 
diff --git a/patches/systemvm/debian/config/root/redundant_router/check_heartbeat.sh.templ b/patches/systemvm/debian/config/root/redundant_router/check_heartbeat.sh.templ
index 7a980bdfb8c..1a390e69eea 100755
--- a/patches/systemvm/debian/config/root/redundant_router/check_heartbeat.sh.templ
+++ b/patches/systemvm/debian/config/root/redundant_router/check_heartbeat.sh.templ
@@ -22,7 +22,7 @@ then
     lasttime=$(cat [RROUTER_BIN_PATH]/keepalived.ts2)
     thistime=$(cat [RROUTER_BIN_PATH]/keepalived.ts)
     diff=$(($thistime - $lasttime))
-    if [ $diff -lt 30]
+    if [ $diff -lt 30 ]
     then
         echo Keepalived process is dead! >> [RROUTER_LOG]
         service keepalived stop >> [RROUTER_LOG] 2>&1