diff --git a/src/plugins/coreplugin/jsexpander.cpp b/src/plugins/coreplugin/jsexpander.cpp
index 4ee72752e59..22a45626851 100644
--- a/src/plugins/coreplugin/jsexpander.cpp
+++ b/src/plugins/coreplugin/jsexpander.cpp
@@ -36,6 +36,7 @@
 
 #include <unordered_map>
 
+#if (QT_VERSION < QT_VERSION_CHECK(5, 14, 0))
 namespace std {
 template<> struct hash<QString>
 {
@@ -47,6 +48,7 @@ template<> struct hash<QString>
     }
 };
 } // namespace std
+#endif
 
 using ExtensionMap = std::unordered_map<QString, Core::JsExpander::ObjectFactory>;
 Q_GLOBAL_STATIC(ExtensionMap, globalJsExtensions);