diff --git a/CHANGES b/CHANGES
index bfab61b7d..ad84c4155 100644
--- a/CHANGES
+++ b/CHANGES
@@ -13,6 +13,7 @@ Bugs fixed
 * #2899: Fix ``hasdoc()`` function in Jinja2 template. It can detect ``genindex``, ``search`` collectly.
 * #2901: Fix epub result: skip creating links from image tags to original image files.
 * #2917: inline code is hyphenated on HTML
+* #1462: autosummary warns for namedtuple with attribute with trailing underscore
 
 Release 1.4.6 (released Aug 20, 2016)
 =====================================
diff --git a/sphinx/ext/autosummary/__init__.py b/sphinx/ext/autosummary/__init__.py
index 3635ad07f..a941aa33a 100644
--- a/sphinx/ext/autosummary/__init__.py
+++ b/sphinx/ext/autosummary/__init__.py
@@ -67,6 +67,7 @@ from docutils import nodes
 
 import sphinx
 from sphinx import addnodes
+from sphinx.util import rst
 from sphinx.util.compat import Directive
 from sphinx.pycode import ModuleAnalyzer, PycodeError
 from sphinx.ext.autodoc import Options
@@ -367,7 +368,7 @@ class Autosummary(Directive):
         for name, sig, summary, real_name in items:
             qualifier = 'obj'
             if 'nosignatures' not in self.options:
-                col1 = ':%s:`%s <%s>`\ %s' % (qualifier, name, real_name, sig)
+                col1 = ':%s:`%s <%s>`\ %s' % (qualifier, name, real_name, rst.escape(sig))
             else:
                 col1 = ':%s:`%s <%s>`' % (qualifier, name, real_name)
             col2 = summary
diff --git a/sphinx/util/rst.py b/sphinx/util/rst.py
new file mode 100644
index 000000000..437ba516b
--- /dev/null
+++ b/sphinx/util/rst.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+"""
+    sphinx.util.rst
+    ~~~~~~~~~~~~~~~
+
+    reST helper functions.
+
+    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+
+import re
+
+symbols_re = re.compile('([!-/:-@\[-`{-~])')
+
+
+def escape(text):
+    return symbols_re.sub(r'\\\1', text)
diff --git a/tests/roots/test-autosummary/dummy_module.py b/tests/roots/test-autosummary/dummy_module.py
index a64035d69..1f4a47378 100644
--- a/tests/roots/test-autosummary/dummy_module.py
+++ b/tests/roots/test-autosummary/dummy_module.py
@@ -69,3 +69,7 @@ class C:
         '''
         This is a nested inner class docstring
         '''
+
+
+def func(arg_):
+    """Test function take an argument ended with underscore."""
diff --git a/tests/test_util_rst.py b/tests/test_util_rst.py
new file mode 100644
index 000000000..72cd87fe8
--- /dev/null
+++ b/tests/test_util_rst.py
@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+"""
+    test_util_rst
+    ~~~~~~~~~~~~~~~
+
+    Tests sphinx.util.rst functions.
+
+    :copyright: Copyright 2007-2016 by the Sphinx team, see AUTHORS.
+    :license: BSD, see LICENSE for details.
+"""
+from sphinx.util.rst import escape
+
+
+def test_escape():
+    assert escape(':ref:`id`') == '\:ref\:\`id\`'
+    assert escape('footnote [#]_') == 'footnote \[\#\]\_'