diff --git a/CMakeLists.txt b/CMakeLists.txt
index 13bbedfcd..f855b38c4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ option(ENABLE_LOGGING "Enable logging with google-glog library" ON)
 option(ALSO_LOG_TO_STDERR "Log to stderr as well as log file" OFF)
 option(ENABLE_ASAN "Enable Address Sanitizer (Unix Only)" OFF)
 option(INSTALL_PRIVATE_HEADERS "Install private headers (usually needed for externally built Rime plugins)" OFF)
-option(ENABLE_EXTERNAL_PLUGINS "Enable loading of externally built Rime plugins (from directory set by RIME_PLUGINS_DIR variable)" OFF)
+option(ENABLE_EXTERNAL_PLUGINS "Enable loading of externally built Rime plugins (from directory set by RIME_PLUGINS_DIR variable). Not compatible with Windows" OFF)
 option(ENABLE_THREADING "Enable threading for deployer" ON)
 option(ENABLE_TIMESTAMP "Embed timestamp to schema artifacts" ON)