diff --git a/update.sh b/update.sh
index 460f38bb..f8fa4304 100755
--- a/update.sh
+++ b/update.sh
@@ -191,7 +191,7 @@ function fuRESTORE () {
 	# Backup file (.env) contains a record of the TPOT_VERSION that is used in docker-compose commmands. 
 	# We should upgrade the version in this file after restoring the backup.
 	newVERSION=$(cat version)
-	sed -i 's/^TPOT_VERSION=.*/TPOT_VERSION=${newVERSION}/' $HOME/tpotce/.env
+	sed -i "s/^TPOT_VERSION=.*/TPOT_VERSION=${newVERSION}/" $HOME/tpotce/.env
 }
 
 ################