diff --git a/test/lit.cfg b/test/lit.cfg
index 1cdd4b7ee9c08..e36f380e3a87e 100644
--- a/test/lit.cfg
+++ b/test/lit.cfg
@@ -1564,7 +1564,7 @@ source_compiler_rt_libs(compiler_rt_dir)
 
 def check_runtime_libs(features_to_check):
     for lib in config.compiler_rt_libs:
-        for (libname, feature) in features_to_check.iteritems():
+        for (libname, feature) in features_to_check.items():
             if lib.startswith("libclang_rt." + libname + "_"):
                 config.available_features.add(feature)