diff --git a/clang/lib/Driver/ToolChains.cpp b/clang/lib/Driver/ToolChains.cpp
index 15e3ade0a1f9570df1f22bade2bb2676f036a619..643eeec0c93687247d88b44f41e7a75c10eb7baf 100644
--- a/clang/lib/Driver/ToolChains.cpp
+++ b/clang/lib/Driver/ToolChains.cpp
@@ -2088,8 +2088,8 @@ std::string Hexagon_TC::GetGnuDir(const std::string &InstalledDir) {
 
 static void GetHexagonLibraryPaths(
   const ArgList &Args,
-  const std::string Ver,
-  const std::string MarchString,
+  const std::string &Ver,
+  const std::string &MarchString,
   const std::string &InstalledDir,
   ToolChain::path_list *LibPaths)
 {