diff --git a/build_files/build_environment/cmake/usd.cmake b/build_files/build_environment/cmake/usd.cmake
index 5334b75877f..7bc8c706cf4 100644
--- a/build_files/build_environment/cmake/usd.cmake
+++ b/build_files/build_environment/cmake/usd.cmake
@@ -95,7 +95,7 @@ set(USD_EXTRA_ARGS
 # Ray: I'm not sure if the other platforms relied on this or not but this is no longer
 # needed for windows. If mac/lin confirm, this can be removed. 
 if(NOT WIN32)
-  LIST(append USD_EXTRA_ARGS
+  list(APPEND USD_EXTRA_ARGS
     # USD wants the tbb debug lib set even when you are doing a release build
     # Otherwise it will error out during the cmake configure phase.
     -DTBB_LIBRARIES_DEBUG=${LIBDIR}/tbb/lib/${LIBPREFIX}${TBB_LIBRARY}${SHAREDLIBEXT}