diff --git a/update.sh b/update.sh
index a1fdcc5e..795004de 100755
--- a/update.sh
+++ b/update.sh
@@ -259,7 +259,7 @@ echo
 }
 
 function fuRESTORE_EWSCFG () {
-if [ -f '/data/ews/conf/ews.cfg' ]; then
+if [ -f '/data/ews/conf/ews.cfg' ] && ! grep 'ews.cfg' /opt/tpot/etc/tpot.yml > /dev/null; then
     echo "### Restoring volume mount for ews.cfg in tpot.yml"
     sed -i '/\/opt\/ewsposter\/ews.ip/a\\ \ \ \ \ - /data/ews/conf/ews.cfg:/opt/ewsposter/ews.cfg' /opt/tpot/etc/tpot.yml
 fi