diff --git a/test/lit.cfg b/test/lit.cfg
index 2c7a9c45ebf..e0881ef2162 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -455,7 +455,7 @@ if have_ld_plugin_support():
     config.available_features.add('ld_plugin')
 
 def have_ld64_plugin_support():
-    if (not config.llvm_tool_lto_build or config.ld64_executable == ''):
+    if (config.llvm_tool_lto_build == 'OFF' or config.ld64_executable == ''):
         return False
 
     ld_cmd = subprocess.Popen([config.ld64_executable, '-v'], stderr = subprocess.PIPE)