diff --git a/src/corelib/serialization/qjsonarray.cpp b/src/corelib/serialization/qjsonarray.cpp
index d839c5cd950..402076eb814 100644
--- a/src/corelib/serialization/qjsonarray.cpp
+++ b/src/corelib/serialization/qjsonarray.cpp
@@ -1073,7 +1073,7 @@ size_t qHash(const QJsonArray &array, size_t seed)
     return qHashRange(array.begin(), array.end(), seed);
 }
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug dbg, const QJsonArray &a)
 {
     QDebugStateSaver saver(dbg);
diff --git a/src/corelib/serialization/qjsonarray.h b/src/corelib/serialization/qjsonarray.h
index 6e4dc6dd5ff..aaaf76cdbbe 100644
--- a/src/corelib/serialization/qjsonarray.h
+++ b/src/corelib/serialization/qjsonarray.h
@@ -325,7 +325,7 @@ inline QJsonValueConstRef::QJsonValueConstRef(QJsonArray *a, qsizetype idx)
 
 Q_CORE_EXPORT size_t qHash(const QJsonArray &array, size_t seed = 0);
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonArray &);
 #endif
 
diff --git a/src/corelib/serialization/qjsoncbor.cpp b/src/corelib/serialization/qjsoncbor.cpp
index 91f8e2e9f28..53c2a16ddbe 100644
--- a/src/corelib/serialization/qjsoncbor.cpp
+++ b/src/corelib/serialization/qjsoncbor.cpp
@@ -129,7 +129,7 @@ static Q_NEVER_INLINE QString makeString(const QCborContainerPrivate *d, qsizety
 
     case QCborValue::Array:
     case QCborValue::Map:
-#if defined(QT_JSON_READONLY) || defined(QT_BOOTSTRAPPED)
+#if defined(QT_BOOTSTRAPPED)
         Q_UNREACHABLE_RETURN(QString());
 #else
         return d->valueAt(idx).toDiagnosticNotation(QCborValue::Compact);
diff --git a/src/corelib/serialization/qjsondocument.cpp b/src/corelib/serialization/qjsondocument.cpp
index 9b1439c66a6..ef012b7154a 100644
--- a/src/corelib/serialization/qjsondocument.cpp
+++ b/src/corelib/serialization/qjsondocument.cpp
@@ -242,7 +242,6 @@ QVariant QJsonDocument::toVariant() const
 
     \sa fromJson(), JsonFormat
  */
-#if !defined(QT_JSON_READONLY) || defined(Q_QDOC)
 QByteArray QJsonDocument::toJson(JsonFormat format) const
 {
     QByteArray json;
@@ -253,7 +252,6 @@ QByteArray QJsonDocument::toJson(JsonFormat format) const
             format == JsonFormat::Compact ? QJsonValue::JsonFormat::Compact
                                           : QJsonValue::JsonFormat::Indented);
 }
-#endif
 
 /*!
  Parses \a json as a UTF-8 encoded JSON document, and creates a QJsonDocument
@@ -472,7 +470,7 @@ bool QJsonDocument::isNull() const
     return (d == nullptr);
 }
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug dbg, const QJsonDocument &o)
 {
     QDebugStateSaver saver(dbg);
diff --git a/src/corelib/serialization/qjsondocument.h b/src/corelib/serialization/qjsondocument.h
index 237445b04aa..6f8a46772fb 100644
--- a/src/corelib/serialization/qjsondocument.h
+++ b/src/corelib/serialization/qjsondocument.h
@@ -74,9 +74,7 @@ public:
 
     static QJsonDocument fromJson(const QByteArray &json, QJsonParseError *error = nullptr);
 
-#if !defined(QT_JSON_READONLY) || defined(Q_QDOC)
     QByteArray toJson(JsonFormat format = JsonFormat::Indented) const;
-#endif
 
     bool isEmpty() const;
     bool isArray() const;
@@ -113,7 +111,7 @@ private:
 
 Q_DECLARE_SHARED(QJsonDocument)
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonDocument &);
 #endif
 
diff --git a/src/corelib/serialization/qjsonobject.cpp b/src/corelib/serialization/qjsonobject.cpp
index 729119d938d..83eb76469d2 100644
--- a/src/corelib/serialization/qjsonobject.cpp
+++ b/src/corelib/serialization/qjsonobject.cpp
@@ -1424,7 +1424,7 @@ size_t qHash(const QJsonObject &object, size_t seed)
     return seed;
 }
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug dbg, const QJsonObject &o)
 {
     QDebugStateSaver saver(dbg);
diff --git a/src/corelib/serialization/qjsonobject.h b/src/corelib/serialization/qjsonobject.h
index fb653094c9c..fd8f344fd6b 100644
--- a/src/corelib/serialization/qjsonobject.h
+++ b/src/corelib/serialization/qjsonobject.h
@@ -366,7 +366,7 @@ inline QJsonValueConstRef::QJsonValueConstRef(QJsonObject *o, qsizetype idx)
 
 Q_CORE_EXPORT size_t qHash(const QJsonObject &object, size_t seed = 0);
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonObject &);
 #endif
 
diff --git a/src/corelib/serialization/qjsonvalue.cpp b/src/corelib/serialization/qjsonvalue.cpp
index 199e5d3154b..4e56cfb1433 100644
--- a/src/corelib/serialization/qjsonvalue.cpp
+++ b/src/corelib/serialization/qjsonvalue.cpp
@@ -642,7 +642,6 @@ QJsonValue QJsonValue::fromJson(QByteArrayView json, QJsonParseError *error)
 
     \sa fromJson(), JsonFormat
  */
-#if !defined(QT_JSON_READONLY) || defined(Q_QDOC)
 QByteArray QJsonValue::toJson(JsonFormat format) const
 {
     QByteArray json;
@@ -651,7 +650,6 @@ QByteArray QJsonValue::toJson(JsonFormat format) const
 
     return json;
 }
-#endif
 
 /*!
     Returns the type of the value.
@@ -1168,7 +1166,7 @@ size_t qHash(const QJsonValue &value, size_t seed)
     Q_UNREACHABLE_RETURN(0);
 }
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug dbg, const QJsonValue &o)
 {
     QDebugStateSaver saver(dbg);
diff --git a/src/corelib/serialization/qjsonvalue.h b/src/corelib/serialization/qjsonvalue.h
index 16e5cffed81..af7d49a67c9 100644
--- a/src/corelib/serialization/qjsonvalue.h
+++ b/src/corelib/serialization/qjsonvalue.h
@@ -83,9 +83,7 @@ public:
 
     static QJsonValue fromJson(QByteArrayView json, QJsonParseError *error = nullptr);
 
-#if !defined(QT_JSON_READONLY) || defined(Q_QDOC)
     QByteArray toJson(JsonFormat format = JsonFormat::Indented) const;
-#endif
 
     Type type() const;
     inline bool isNull() const { return type() == Null; }
@@ -333,7 +331,7 @@ inline QJsonValue QCborValueConstRef::toJsonValue() const
 
 Q_CORE_EXPORT size_t qHash(const QJsonValue &value, size_t seed = 0);
 
-#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY)
+#if !defined(QT_NO_DEBUG_STREAM)
 Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonValue &);
 #endif