diff --git a/docs/options.md b/docs/options.md
index abed069a..727344ca 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -104,7 +104,7 @@ Example: `PIP_EXTRA_INDEX_URL="https://pypi.myorg.com/simple"`
 Platform-specific variants also available:  
 `CIBW_ENVIRONMENT_MACOS` | `CIBW_ENVIRONMENT_WINDOWS` | `CIBW_ENVIRONMENT_LINUX`
 
-In addition to the above, `cibuildwheel` always defines the environment variable `CIBUILDWHEEL=1`. This can be useful for [building wheels with optional extensions](https://github.com/joerick/cibuildwheel/wiki/Building-packages-with-optional-C-extensions).
+In addition to the above, `cibuildwheel` always defines the environment variable `CIBUILDWHEEL=1`. This can be useful for [building wheels with optional extensions](faq.md#building-packages-with-optional-c-extensions).
 
 
 ### `CIBW_BEFORE_BUILD` {: #before-build}