diff --git a/unittest/force-styles/CMakeLists.txt b/unittest/force-styles/CMakeLists.txt
index 9ef2b73ec5..c4c008f6df 100644
--- a/unittest/force-styles/CMakeLists.txt
+++ b/unittest/force-styles/CMakeLists.txt
@@ -1,19 +1,12 @@
 
 find_package(YAML)
-if(YAML_FOUND)
-  set(DOWNLOAD_YAML_DEFAULT OFF)
-else()
-  set(DOWNLOAD_YAML_DEFAULT ON)
-endif()
-option(DOWNLOAD_YAML "Download YAML library instead of using an already installed one)" ${DOWNLOAD_YAML_DEFAULT})
-set(YAML_URL "https://github.com/akohlmey/libyaml/archive/refs/heads/new-cmake.tar.gz" CACHE STRING "URL for libyaml tarball")
-set(YAML_MD5 "1683f5957a79d7a823e09575b0488df2" CACHE STRING "MD5 checksum of libyaml tarball")
-mark_as_advanced(YAML_URL)
-mark_as_advanced(YAML_MD5)
+if(NOT YAML_FOUND)
+  set(YAML_URL "https://github.com/akohlmey/libyaml/archive/refs/heads/new-cmake.tar.gz" CACHE STRING "URL for libyaml tarball")
+  set(YAML_MD5 "1683f5957a79d7a823e09575b0488df2" CACHE STRING "MD5 checksum of libyaml tarball")
+  mark_as_advanced(YAML_URL)
+  mark_as_advanced(YAML_MD5)
 
-if(DOWNLOAD_YAML)
   # download and build a local copy of libyaml
-  set(BUILD_TESTING off)
   include(ExternalCMakeProject)
   ExternalCMakeProject(libyaml ${YAML_URL} ${YAML_MD5} libyaml .)
   add_library(Yaml::Yaml ALIAS yaml)