diff --git a/terminatorlib/tests/test_doctests.py b/terminatorlib/tests/test_doctests.py
index 86898eaa..fd964210 100644
--- a/terminatorlib/tests/test_doctests.py
+++ b/terminatorlib/tests/test_doctests.py
@@ -10,6 +10,7 @@ def test_suite():
         'testborg',
         'cwd',
         'factory',
+        'util',
         ):
         suite.addTest(DocTestSuite('terminatorlib.' + name))
     return suite
diff --git a/terminatorlib/util.py b/terminatorlib/util.py
index ad712b38..143bc6f8 100755
--- a/terminatorlib/util.py
+++ b/terminatorlib/util.py
@@ -14,7 +14,14 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program; if not, write to the Free Software
 #  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-"""Terminator.util - misc utility functions"""
+"""Terminator.util - misc utility functions
+
+>>> a = {'foo': 'bar', 'baz': 'bjonk'}
+>>> b = {'foo': 'far', 'baz': 'bjonk'}
+>>> dict_diff(a, b)
+{'foo': 'far'}
+
+"""
 
 import sys
 import gtk