diff --git a/qtbase/src/corelib/global/qfloat16.h b/qtbase/src/corelib/global/qfloat16.h
index 3e50ad8467..2453ff8847 100644
--- a/qtbase/src/corelib/global/qfloat16.h
+++ b/qtbase/src/corelib/global/qfloat16.h
@@ -83,7 +83,9 @@ private:
     Q_CORE_EXPORT static const quint32 shifttable[];
 
     friend bool qIsNull(qfloat16 f) Q_DECL_NOTHROW;
+#if ! defined(QT_NO_FLOAT16_OPERATORS)
     friend qfloat16 operator-(qfloat16 a) Q_DECL_NOTHROW;
+#endif
 };
 
 Q_DECLARE_TYPEINFO(qfloat16, Q_PRIMITIVE_TYPE);
@@ -165,6 +167,7 @@ inline qfloat16::operator float() const Q_DECL_NOTHROW
 }
 #endif
 
+#if ! defined(QT_NO_FLOAT16_OPERATORS)
 inline qfloat16 operator-(qfloat16 a) Q_DECL_NOTHROW
 {
     qfloat16 f;
@@ -206,11 +209,12 @@ QF16_MAKE_ARITH_OP_INT(-)
 QF16_MAKE_ARITH_OP_INT(*)
 QF16_MAKE_ARITH_OP_INT(/)
 #undef QF16_MAKE_ARITH_OP_INT
-
+#endif
 QT_WARNING_PUSH
 QT_WARNING_DISABLE_CLANG("-Wfloat-equal")
 QT_WARNING_DISABLE_GCC("-Wfloat-equal")
 
+#if ! defined(QT_NO_FLOAT16_OPERATORS)
 inline bool operator>(qfloat16 a, qfloat16 b)  Q_DECL_NOTHROW { return static_cast<float>(a) >  static_cast<float>(b); }
 inline bool operator<(qfloat16 a, qfloat16 b)  Q_DECL_NOTHROW { return static_cast<float>(a) <  static_cast<float>(b); }
 inline bool operator>=(qfloat16 a, qfloat16 b) Q_DECL_NOTHROW { return static_cast<float>(a) >= static_cast<float>(b); }
@@ -244,6 +248,7 @@ QF16_MAKE_BOOL_OP_INT(<=)
 QF16_MAKE_BOOL_OP_INT(==)
 QF16_MAKE_BOOL_OP_INT(!=)
 #undef QF16_MAKE_BOOL_OP_INT
+#endif
 
 QT_WARNING_POP