diff --git a/README.md b/README.md
index d546256..7a47912 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,9 @@ capybara-webkit depends on a WebKit implementation from Qt, a cross-platform dev
 
 OS X:
 
-[Download the non-debug Cocoa package](http://qt.nokia.com/downloads/qt-for-open-source-cpp-development-on-mac-os-x). Note that these binaries aren't compatible with OS X 10.7(Lion), so you'll need to install Qt via homebrew(can take more than an hour).
+[Download the non-debug Cocoa package](http://qt.nokia.com/downloads/qt-for-open-source-cpp-development-on-mac-os-x). Note that these binaries aren't compatible with OS X 10.7(Lion), so you'll need to install Qt via homebrew(can take more than an hour). To build from source:
+
+    brew install qt --build-from-source
 
 Ubuntu: