diff --git a/index.sh b/index.sh
index 91057a8..8d274aa 100755
--- a/index.sh
+++ b/index.sh
@@ -24,8 +24,8 @@ echo "slapd slapd/invalid_config boolean true" | debconf-set-selections
 apt install -y slapd ldap-utils
 
 echo '' > /etc/ldap/ldap.conf
-echo 'BASE   $ldap_base' >> /etc/ldap/ldap.conf
-echo 'URI    ldap://localhost' >> /etc/ldap/ldap.conf
+echo "BASE   $ldap_base" >> /etc/ldap/ldap.conf
+echo "URI    ldap://localhost" >> /etc/ldap/ldap.conf
 
 ldapadd -Y EXTERNAL -H ldapi:/// -f files/sshkey.ldif
 ldapadd -Y EXTERNAL -H ldapi:/// -f files/sudo.ldif