diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index 65c88d35abc..928707660b4 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -802,7 +802,7 @@ uint qHash(long double key, uint seed) Q_DECL_NOTHROW
 }
 #endif
 
-/*! \fn uint qHash(QChar key, uint seed = 0)
+/*! \fn uint qHash(const QChar key, uint seed = 0)
     \relates QHash
     \since 5.0
 
diff --git a/src/corelib/tools/qhash.h b/src/corelib/tools/qhash.h
index c09d7aaccbb..7a421a4586a 100644
--- a/src/corelib/tools/qhash.h
+++ b/src/corelib/tools/qhash.h
@@ -86,7 +86,7 @@ Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(double key, uint seed = 0) Q_DECL
 #ifndef Q_OS_DARWIN
 Q_CORE_EXPORT Q_DECL_CONST_FUNCTION uint qHash(long double key, uint seed = 0) Q_DECL_NOTHROW;
 #endif
-Q_DECL_CONST_FUNCTION inline uint qHash(QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
+Q_DECL_CONST_FUNCTION Q_DECL_CONSTEXPR inline uint qHash(const QChar key, uint seed = 0) Q_DECL_NOTHROW { return qHash(key.unicode(), seed); }
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QByteArray &key, uint seed = 0) Q_DECL_NOTHROW;
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QString &key, uint seed = 0) Q_DECL_NOTHROW;
 Q_CORE_EXPORT Q_DECL_PURE_FUNCTION uint qHash(const QStringRef &key, uint seed = 0) Q_DECL_NOTHROW;