diff --git a/src/cli/one_helper/onetemplate_helper.rb b/src/cli/one_helper/onetemplate_helper.rb
index 425e25d2d3..1a4fdb753f 100644
--- a/src/cli/one_helper/onetemplate_helper.rb
+++ b/src/cli/one_helper/onetemplate_helper.rb
@@ -23,7 +23,7 @@ class OneTemplateHelper < OpenNebulaHelper::OneHelper
         :format => String,
         :description =>  <<-EOT.strip
 Name of the new VM or TEMPLATE. When instantiating
-                               multiple VMs you can use the\"%i\" wildcard to produce
+                               multiple VMs you can use the \"%i\" wildcard to produce
                                different names such as vm-0, vm-1...
 EOT
     }
diff --git a/src/cli/onetemplate b/src/cli/onetemplate
index 6ca92950b2..ed360ecfa0 100755
--- a/src/cli/onetemplate
+++ b/src/cli/onetemplate
@@ -172,7 +172,7 @@ cmd=CommandParser::CmdParser.new(ARGV) do
         managed with the 'onevm' command
     EOT
 
-    command :instantiate, instantiate_desc, :templateid,
+    command :instantiate, instantiate_desc, :templateid, [:file, nil],
             :options=>instantiate_options do
         exit_code=0
 
@@ -184,7 +184,12 @@ cmd=CommandParser::CmdParser.new(ARGV) do
 
                 on_hold = options[:hold] != nil
 
-                res = t.instantiate(name, on_hold)
+                extra_template = ""
+                if !args[1].nil?
+                    extra_template = File.read(args[1])
+                end
+
+                res = t.instantiate(name, on_hold, extra_template)
 
                 if !OpenNebula.is_error?(res)
                     puts "VM ID: #{res}"
diff --git a/src/oca/ruby/opennebula/template.rb b/src/oca/ruby/opennebula/template.rb
index e626ce5460..8b73248cb3 100644
--- a/src/oca/ruby/opennebula/template.rb
+++ b/src/oca/ruby/opennebula/template.rb
@@ -90,14 +90,19 @@ module OpenNebula
         #   string OpenNebula will set a default name
         # @param hold [true,false] false to create the VM in pending state,
         #   true to create it on hold
+        # @param template [String] User provided Template to merge with the
+        #   one being instantiated
         #
         # @return [Integer, OpenNebula::Error] The new VM id, Error
         #   otherwise
-        def instantiate(name="", hold=false)
+        def instantiate(name="", hold=false, template="")
             return Error.new('ID not defined') if !@pe_id
 
             name ||= ""
-            rc = @client.call(TEMPLATE_METHODS[:instantiate], @pe_id, name, hold)
+            template ||= ""
+
+            rc = @client.call(
+                TEMPLATE_METHODS[:instantiate], @pe_id, name, hold, template)
 
             return rc
         end