diff --git a/templates/fpm/pool.conf.erb b/templates/fpm/pool.conf.erb
index 9e3ff49..532b2be 100644
--- a/templates/fpm/pool.conf.erb
+++ b/templates/fpm/pool.conf.erb
@@ -253,7 +253,7 @@ security.limit_extensions = <%= @security_limit_extensions %>
 env[<%= var %>] = $<%= var %>
 <% end -%>
 <% @env_value.sort_by {|key,value| key}.each do |key,value| -%>
-env[<%= key %>] = <%= value %>
+env[<%= key %>] = "<%= value %>"
 <% end -%>
 
 ; Additional php.ini defines, specific to this pool of workers. These settings