diff --git a/src/sunstone/models/OpenNebulaJSON/JSONUtils.rb b/src/sunstone/models/OpenNebulaJSON/JSONUtils.rb
index 32d6b7dd22..167cffa321 100644
--- a/src/sunstone/models/OpenNebulaJSON/JSONUtils.rb
+++ b/src/sunstone/models/OpenNebulaJSON/JSONUtils.rb
@@ -27,7 +27,7 @@ module OpenNebulaJSON
             end
         end
 
-        def parse_json(json_str, root_element)
+        def self.parse_json(json_str, root_element)
             begin
                 hash = JSON.parse(json_str)
             rescue Exception => e
@@ -41,6 +41,10 @@ module OpenNebulaJSON
             end
         end
 
+        def parse_json(json_str, root_element)
+            JSONUtils.parse_json(json_str, root_element)
+        end
+
         def parse_json_sym(json_str, root_element)
             begin
                 parser = JSON.parser.new(json_str, {:symbolize_names => true})
diff --git a/src/sunstone/models/SunstoneServer.rb b/src/sunstone/models/SunstoneServer.rb
index 463fedba4f..1f484704d9 100644
--- a/src/sunstone/models/SunstoneServer.rb
+++ b/src/sunstone/models/SunstoneServer.rb
@@ -136,14 +136,14 @@ class SunstoneServer < CloudServer
     #
     ############################################################################
     def upload(template, file_path)
-        image_hash = parse_json(template, 'image')
+        image_hash = JSONUtils.parse_json(template, 'image')
         if OpenNebula.is_error?(image_hash)
             return [500, image_hash.to_json]
         end
 
         image_hash['PATH'] = file_path
 
-        ds_id = parse_json(template, 'ds_id')
+        ds_id = JSONUtils.parse_json(template, 'ds_id')
         if OpenNebula.is_error?(ds_id)
             return [500, ds_id.to_json]
         end