diff --git a/CMakeLists.txt b/CMakeLists.txt
index bf76c372..b71abbe3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -179,8 +179,7 @@ set_property(GLOBAL PROPERTY CTEST_TARGETS_ADDED 1)
 FetchContent_Declare(
     yaml-cpp
     URL "https://github.com/loot/yaml-cpp/archive/0.8.0+merge-key-support.2.tar.gz"
-    URL_HASH "SHA256=e91779044cd4025ec10ed31986031031ef22ebce90a64cc8f85e7c7e95a1abc6"
-    FIND_PACKAGE_ARGS)
+    URL_HASH "SHA256=e91779044cd4025ec10ed31986031031ef22ebce90a64cc8f85e7c7e95a1abc6")
 
 # Set BUILD_SHARED_LIBS=OFF to prevent fmt and spdlog from being built as shared
 # libraries.
diff --git a/README.md b/README.md
index b3ff0518..5dca21b8 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,7 @@ Parameter | Values | Default |Description
 `ESPLUGIN_URL` | A URL | A GitHub release archive URL | The URL to get a source code archive from. This can be used to supply a local path if the archive has already been downloaded (e.g. for offline builds).
 `LIBLOADORDER_URL` | A URL | A GitHub release archive URL | The URL to get a source code archive from. This can be used to supply a local path if the archive has already been downloaded (e.g. for offline builds).
 `LOOT_CONDITION_INTERPRETER_URL` | A URL | A GitHub release archive URL | The URL to get a source code archive from. This can be used to supply a local path if the archive has already been downloaded (e.g. for offline builds).
+`FETCHCONTENT_SOURCE_DIR_YAML-CPP` | A path | Unset | The path to an existing yaml-cpp source folder to build yaml-cpp from. Note that libloot relies on [a fork of yaml-cpp](https://github.com/loot/yaml-cpp) to support YAML merge keys in metadata files. If unset, CMake will download the source from GitHub when the libloot build is configured.
 
 You may also need to set `CMAKE_PREFIX_PATH` if CMake cannot find Boost.