diff --git a/src/vmm_mad/remotes/vmware/vi_driver.rb b/src/vmm_mad/remotes/vmware/vi_driver.rb
index 8a66c07b00..632dc4ad11 100644
--- a/src/vmm_mad/remotes/vmware/vi_driver.rb
+++ b/src/vmm_mad/remotes/vmware/vi_driver.rb
@@ -399,7 +399,7 @@ class VIHost
         # Datastores
         @free_ds_info.each{|k,v|
             used_space = v[:capacity].to_i - v[:free_space].to_i
-            str_info << "DS=[ID=#{k},USED_MB=#{used_space},"
+            str_info << "DS=[ID=\"#{k}\",USED_MB=#{used_space},"
             str_info << "TOTAL_MB=#{v[:capacity]},"
             str_info << "FREE_MB=#{v[:free_space]}]\n"
         }