diff --git a/addons/gamification/templates.py b/addons/gamification/templates.py
new file mode 100644
index 00000000000..21e6b8e0b4f
--- /dev/null
+++ b/addons/gamification/templates.py
@@ -0,0 +1,39 @@
+# We use a jinja2 sandboxed environment to render mako templates.
+# Note that the rendering does not cover all the mako syntax, in particular
+# arbitrary Python statements are not accepted, and not all expressions are
+# allowed: only "public" attributes (not starting with '_') of objects may
+# be accessed.
+# This is done on purpose: it prevents incidental or malicious execution of
+# Python code that may break the security of the server.
+
+from jinja2.sandbox import SandboxedEnvironment
+from jinja2 import FileSystemLoader
+    
+from urllib import urlencode, quote as quote
+import os.path
+
+class TemplateHelper(SandboxedEnvironment):
+
+    GAMIFICATION_PATH = os.path.dirname(os.path.abspath(__file__))
+
+    def __init__(self):
+
+        super(TemplateHelper,self).__init__(
+            loader=FileSystemLoader(os.path.join(self.GAMIFICATION_PATH,'templates/')),
+            block_start_string="<%",
+            block_end_string="%>",
+            variable_start_string="${",
+            variable_end_string="}",
+            comment_start_string="<%doc>",
+            comment_end_string="</%doc>",
+            line_statement_prefix="%",
+            line_comment_prefix="##",
+            trim_blocks=True,               # do not output newline after blocks
+            autoescape=True,                # XML/HTML automatic escaping
+        )
+        self.globals.update({
+            'str': str,
+            'quote': quote,
+            'urlencode': urlencode,
+        })
+