diff --git a/update/renew.sh b/update/renew.sh
index 13ba735..7d18993 100644
--- a/update/renew.sh
+++ b/update/renew.sh
@@ -7,16 +7,18 @@ curl https://raw.hellogithub.com/hosts >> /opt/logs/hosts
 cd /opt/websites/homepage/
 node assets/js/bing.js > /dev/null 2>&1
 
-# random logo for navigation
-bash /opt/scripts/update/nav_rand_logo.sh
+if [[ `date +%d` == '01' ]]; then
+    # random logo for navigation
+    bash /opt/scripts/update/nav_rand_logo.sh
 
-# random logo for dash
-bash /opt/scripts/update/dash_rand_logo.sh
+    # random logo for dash
+    bash /opt/scripts/update/dash_rand_logo.sh
+fi
 
 # logo renew
 let numOfAvatar=`ls /opt/websites/nav/assets/images/logos/ | wc -l`
 let randNumber=$RANDOM%$numOfAvatar
-cp /opt/websites/nav/assets/images/logos/${randNumber}.jpg /opt/websites/homepage/assets/img/logo.jpg
 cp /opt/websites/nav/assets/images/logos/${randNumber}.jpg /opt/websites/nav/assets/images/logos/avatar.jpg
+cp /opt/websites/nav/assets/images/logos/${randNumber}.jpg /opt/websites/homepage/assets/img/logo.jpg
 cp /opt/websites/nav/assets/images/logos/${randNumber}.jpg /opt/apps/blog/img/avatar.jpg