diff --git a/documents/DeveloperGuide/MainPage.md b/documents/DeveloperGuide/MainPage.md
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@@ -34,7 +34,7 @@ The recommended OpenColorIO configuration for MaterialX is [ACES 1.0.3](https://
 
 ### Building API Documentation
 
-To generate HTML documentation for the MaterialX C++ API, make sure a version of [Doxygen](https://www.doxygen.org/) is on your path, and select the advanced option `MATERIALX_GENERATE_DOCS` in CMake.  This option will add a target named `MaterialXDocs` to your project, which can be built as an independent step from your development environment.
+To generate HTML documentation for the MaterialX C++ API, make sure a version of [Doxygen](https://www.doxygen.org/) is on your path, and select the advanced option `MATERIALX_BUILD_DOCS` in CMake.  This option will add a target named `MaterialXDocs` to your project, which can be built as an independent step from your development environment.
 
 ### Installing MaterialX