--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -53,8 +53,6 @@
 
 add_subdirectory(optional)
 
-ADD_SUBDIRECTORY(lz4)
-
 set(HIDAPI_WITH_LIBUSB OFF)
 set(HIDAPI_WITH_HIDRAW ON)
 add_subdirectory(hidapi)