diff --git a/vars/main.yml b/vars/main.yml
index 6406754..f0b7647 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -20,10 +20,10 @@ zimbra-policyd: n
 # Zimbra configuration
 ################################################################################
 
-hostname: localhost
-domain: localdomain
-zmpasswd: !23Change
-zmnetwork: 192.168.200.0/8
+hostname: "localhost"
+domain: "localdomain"
+zmpasswd: "!23Change"
+zmnetwork: "192.168.200.0/8"
 zmlogologin:
 zmlogoapp:
 timezone: UTC