diff --git a/images/linux/scripts/installers/php.sh b/images/linux/scripts/installers/php.sh
index 0c4bbaab..3725f6ac 100644
--- a/images/linux/scripts/installers/php.sh
+++ b/images/linux/scripts/installers/php.sh
@@ -141,8 +141,8 @@ if isUbuntu20 ; then
   apt-get update
   AddBlockquote "To use ppa:ondrej/php APT repository On Ubuntu 20.04 it is necessary to add it to the APT sources"
   StartCode
-  WriteItem apt-add-repository ppa:ondrej/php -y
-  WriteItem apt-get update
+  WriteItem "apt-add-repository ppa:ondrej/php -y"
+  WriteItem "apt-get update"
   EndCode
 fi