diff --git a/src/corelib/global/qfloat16.cpp b/src/corelib/global/qfloat16.cpp
index b8e7cbe928f..376d6440e0a 100644
--- a/src/corelib/global/qfloat16.cpp
+++ b/src/corelib/global/qfloat16.cpp
@@ -363,6 +363,20 @@ Q_CORE_EXPORT void qFloatFromFloat16(float *out, const qfloat16 *in, qsizetype l
         out[i] = float(in[i]);
 }
 
+/*!
+    \fn size_t qfloat16::qHash(qfloat16 key, size_t seed)
+    \since 6.5.4
+    \relates qfloat16
+
+    Returns the hash value for the \a key, using \a seed to seed the
+    calculation.
+
+    \note In Qt versions before 6.5, this operation was provided by the
+    qHash(float) overload. In Qt versions 6.5.0 to 6.5.3, this functionality
+    was broken in various ways. In Qt versions 6.5.4 and 6.6 onwards, this
+    overload restores the Qt 6.4 behavior.
+*/
+
 #ifndef QT_NO_DATASTREAM
 /*!
     \fn qfloat16::operator<<(QDataStream &ds, qfloat16 f)
diff --git a/src/corelib/global/qfloat16.h b/src/corelib/global/qfloat16.h
index 76ea990c33b..15dab5e7139 100644
--- a/src/corelib/global/qfloat16.h
+++ b/src/corelib/global/qfloat16.h
@@ -6,8 +6,10 @@
 #define QFLOAT16_H
 
 #include <QtCore/qglobal.h>
+#include <QtCore/qhashfunctions.h>
 #include <QtCore/qmath.h>
 #include <QtCore/qnamespace.h>
+
 #include <limits>
 #include <string.h>
 
@@ -144,6 +146,9 @@ private:
     friend inline qfloat16 operator*(qfloat16 a, qfloat16 b) noexcept { return qfloat16(static_cast<NearestFloat>(a) * static_cast<NearestFloat>(b)); }
     friend inline qfloat16 operator/(qfloat16 a, qfloat16 b) noexcept { return qfloat16(static_cast<NearestFloat>(a) / static_cast<NearestFloat>(b)); }
 
+    friend size_t qHash(qfloat16 key, size_t seed = 0) noexcept
+    { return qHash(float(key), seed); } // 6.4 algorithm, so keep using it; ### Qt 7: fix QTBUG-116077
+
 #define QF16_MAKE_ARITH_OP_FP(FP, OP) \
     friend inline FP operator OP(qfloat16 lhs, FP rhs) noexcept { return static_cast<FP>(lhs) OP rhs; } \
     friend inline FP operator OP(FP lhs, qfloat16 rhs) noexcept { return lhs OP static_cast<FP>(rhs); }
diff --git a/tests/auto/corelib/tools/qhashfunctions/tst_qhashfunctions.cpp b/tests/auto/corelib/tools/qhashfunctions/tst_qhashfunctions.cpp
index 69e401ae66f..8618a03d142 100644
--- a/tests/auto/corelib/tools/qhashfunctions/tst_qhashfunctions.cpp
+++ b/tests/auto/corelib/tools/qhashfunctions/tst_qhashfunctions.cpp
@@ -107,16 +107,10 @@ void tst_QHashFunctions::consistent()
     // floats
     {
         const/*expr broken: QTBUG-116079*/ qfloat16 f16 = -42.f;
-#if !QFLOAT16_IS_NATIVE // QTBUG-116064
         const auto h16 = qHash(f16, seed);
-#endif
         const auto h32 = qHash(float(f16), seed);
         const auto h64 = qHash(double(f16), seed);
-#if !QFLOAT16_IS_NATIVE // QTBUG-116064
-        if (seed != 0)
-            QEXPECT_FAIL("", "QTBUG-116076", Continue);
         QCOMPARE(h16, h32);
-#endif
         QEXPECT_FAIL("", "QTBUG-116077", Continue);
         QCOMPARE(h32, h64);
     }