diff --git a/Source/cmLocalGenerator.cxx b/Source/cmLocalGenerator.cxx
index c0ffd64445..c9dfdeacf4 100644
--- a/Source/cmLocalGenerator.cxx
+++ b/Source/cmLocalGenerator.cxx
@@ -3,6 +3,7 @@
 #include "cmLocalGenerator.h"
 
 #include <algorithm>
+#include <array>
 #include <cassert>
 #include <cstdio>
 #include <cstdlib>
@@ -2475,8 +2476,10 @@ void cmLocalGenerator::AddPchDependencies(cmGeneratorTarget* target)
     target->GetSourceFiles(sources, config);
 
     const std::string configUpper = cmSystemTools::UpperCase(config);
+    static const std::array<std::string, 4> langs = { { "C", "CXX", "OBJC",
+                                                        "OBJCXX" } };
 
-    for (const std::string& lang : { "C", "CXX", "OBJC", "OBJCXX" }) {
+    for (const std::string& lang : langs) {
       auto langSources = std::count_if(
         sources.begin(), sources.end(), [lang](cmSourceFile* sf) {
           return lang == sf->GetLanguage() &&