diff --git a/clang/cmake/caches/Fuchsia.cmake b/clang/cmake/caches/Fuchsia.cmake
index 1209fd93598613..df69d7d0dd414b 100644
--- a/clang/cmake/caches/Fuchsia.cmake
+++ b/clang/cmake/caches/Fuchsia.cmake
@@ -66,6 +66,7 @@ set(_FUCHSIA_BOOTSTRAP_PASSTHROUGH
   LLDB_PYTHON_HOME
   LLDB_PYTHON_RELATIVE_PATH
   LLDB_TEST_USE_VENDOR_PACKAGES
+  LLDB_TEST_USER_ARGS
   Python3_EXECUTABLE
   Python3_LIBRARIES
   Python3_INCLUDE_DIRS