diff --git a/CHANGES b/CHANGES
index 65ad40b9f..75d8c6725 100644
--- a/CHANGES
+++ b/CHANGES
@@ -39,6 +39,7 @@ Bugs fixed
   (iPhone5s safari).
 * #1722: restore ``toctree()`` template function behavior that was changed at 1.3b1.
 * #1732: i18n: localized table caption raises exception.
+* #1718: ``:numref:`` does not work with capital letters in the label
 
 
 Release 1.3b2 (released Dec 5, 2014)
diff --git a/sphinx/domains/std.py b/sphinx/domains/std.py
index d39762fad..c02c9827a 100644
--- a/sphinx/domains/std.py
+++ b/sphinx/domains/std.py
@@ -636,7 +636,7 @@ class StandardDomain(Domain):
                 return None
 
             title = contnode.astext()
-            if target == title:
+            if target == title.lower():
                 prefix = env.config.numfig_format.get(figtype, '')
                 title = prefix.replace('%s', '#')
                 newtitle = prefix % '.'.join(map(str, fignumber))
diff --git a/tests/roots/test-numfig/baz.rst b/tests/roots/test-numfig/baz.rst
index da9e0fe0a..42fcb06d1 100644
--- a/tests/roots/test-numfig/baz.rst
+++ b/tests/roots/test-numfig/baz.rst
@@ -14,7 +14,7 @@ Baz A
 
    hello,world
 
-.. _code22:
+.. _CODE22:
 
 .. code-block:: python
    :caption: should be List 2.2
diff --git a/tests/roots/test-numfig/index.rst b/tests/roots/test-numfig/index.rst
index 7779fe91c..a2826a1e4 100644
--- a/tests/roots/test-numfig/index.rst
+++ b/tests/roots/test-numfig/index.rst
@@ -29,7 +29,7 @@ test-tocdepth
 
    hello,world
 
-.. _code_1:
+.. _CODE_1:
 
 .. code-block:: python
    :caption: should be List 1
@@ -46,5 +46,5 @@ test-tocdepth
 * Fig.2.2 is :numref:`Figure# <fig22>`
 * Table.1 is :numref:`table-1`
 * Table.2.2 is :numref:`Table:# <table22>`
-* List.1 is :numref:`code_1`
-* List.2.2 is :numref:`Code-# <code22>`
+* List.1 is :numref:`CODE_1`
+* List.2.2 is :numref:`Code-# <CODE22>`
diff --git a/tests/test_build_html.py b/tests/test_build_html.py
index bc99ab3b8..978bee8ed 100644
--- a/tests/test_build_html.py
+++ b/tests/test_build_html.py
@@ -492,7 +492,7 @@ def test_numfig_disabled(app, status, warning):
             (".//li/code/span", '^Figure#$', True),
             (".//li/code/span", '^table-1$', True),
             (".//li/code/span", '^Table:#$', True),
-            (".//li/code/span", '^code_1$', True),
+            (".//li/code/span", '^CODE_1$', True),
             (".//li/code/span", '^Code-#$', True),
         ],
         'foo.html': [