typo fix.
diff --git a/Doc/lib/libunittest.tex b/Doc/lib/libunittest.tex
index 1cd2857..b1c0918 100644
--- a/Doc/lib/libunittest.tex
+++ b/Doc/lib/libunittest.tex
@@ -51,7 +51,7 @@
The test case and test fixture concepts are supported through the
\class{TestCase} and \class{FunctionTestCase} classes; the former
-should be used when creating new tests, and the later can be used when
+should be used when creating new tests, and the latter can be used when
integrating existing test code with a PyUnit-driven framework. When
building test fixtures using \class{TestCase}, the \method{setUp()}
and \method{tearDown()} methods can be overridden to provide