Issue #4689: Fix typo.
diff --git a/Doc/mac/using.tex b/Doc/mac/using.tex
index ca522c6..13c8372 100644
--- a/Doc/mac/using.tex
+++ b/Doc/mac/using.tex
@@ -126,7 +126,7 @@
\emph{PyObjC} is a Python binding to Apple's Objective-C/Cocoa framework, which
is the foundation of most modern Mac development. Information on PyObjC is
-available from \url{http://pybojc.sourceforge.net}.
+available from \url{http://pyobjc.sourceforge.net}.
The standard Python GUI toolkit is \module{Tkinter}, based on the cross-platform
Tk toolkit (\url{http://www.tcl.tk}). An Aqua-native version of Tk is bundled