diff --git a/debuginfo-tests/lit.site.cfg.py.in b/debuginfo-tests/lit.site.cfg.py.in
index 09ae4a1da779..70169ddb1d7e 100644
--- a/debuginfo-tests/lit.site.cfg.py.in
+++ b/debuginfo-tests/lit.site.cfg.py.in
@@ -9,6 +9,7 @@ config.llvm_obj_root = "@LLVM_BINARY_DIR@"
 config.llvm_tools_dir = "@LLVM_TOOLS_DIR@"
 config.llvm_libs_dir = "@LLVM_LIBS_DIR@"
 config.llvm_shlib_dir = "@SHLIBDIR@"
+config.lit_tools_dir = "@LLVM_LIT_TOOLS_DIR@"
 config.llvm_plugin_ext = "@LLVM_PLUGIN_EXT@"
 config.debuginfo_tests_obj_root = "@DEBUGINFO_TESTS_BINARY_DIR@"
 config.debuginfo_tests_src_root = "@DEBUGINFO_TESTS_SOURCE_DIR@"