diff --git a/src/vmm_mad/remotes/vcenter/vcenter_driver.rb b/src/vmm_mad/remotes/vcenter/vcenter_driver.rb
index 9d7366db11..6559f26cbf 100644
--- a/src/vmm_mad/remotes/vcenter/vcenter_driver.rb
+++ b/src/vmm_mad/remotes/vcenter/vcenter_driver.rb
@@ -1125,7 +1125,7 @@ class VCenterVm
             str << "GRAPHICS = [\n"\
                    "  TYPE     =\"vnc\",\n"\
                    "  LISTEN   =\"0.0.0.0\",\n"\
-                   "  PORT     =\"#{vp[0][:value]}\"\n"
+                   "  PORT     =\"#{vp[0][:value]},\"\n"
             str << "  KEYMAP   =\"#{keymap[0][:value]}\"\n" if keymap
             str << "]\n"
         end