3 files changed, 5 insertions, 5 deletions
diff --git a/src/corelib/json/qjsonarray.h b/src/corelib/json/qjsonarray.h
index 6148642106..311753d977 100644
--- a/src/corelib/json/qjsonarray.h
+++ b/src/corelib/json/qjsonarray.h
@@ -107,7 +107,7 @@ public:
         typedef QJsonValueRef reference;
         typedef QJsonValueRefPtr pointer;
 
-        inline iterator() : a(0), i(0) { }
+        inline iterator() : a(Q_NULLPTR), i(0) { }
         explicit inline iterator(QJsonArray *array, int index) : a(array), i(index) { }
 
         inline QJsonValueRef operator*() const { return QJsonValueRef(a, i); }
@@ -152,7 +152,7 @@ public:
         typedef QJsonValue reference;
         typedef QJsonValuePtr pointer;
 
-        inline const_iterator() : a(0), i(0) { }
+        inline const_iterator() : a(Q_NULLPTR), i(0) { }
         explicit inline const_iterator(const QJsonArray *array, int index) : a(array), i(index) { }
         inline const_iterator(const const_iterator &o) : a(o.a), i(o.i) {}
         inline const_iterator(const iterator &o) : a(o.a), i(o.i) {}
diff --git a/src/corelib/json/qjsondocument.h b/src/corelib/json/qjsondocument.h
index 285b42c6c8..d7a88b2f15 100644
--- a/src/corelib/json/qjsondocument.h
+++ b/src/corelib/json/qjsondocument.h
@@ -106,7 +106,7 @@ public:
         Compact
     };
 
-    static QJsonDocument fromJson(const QByteArray &json, QJsonParseError *error = 0);
+    static QJsonDocument fromJson(const QByteArray &json, QJsonParseError *error = Q_NULLPTR);
 
 #ifdef Q_QDOC
     QByteArray toJson(JsonFormat format = Indented) const;
diff --git a/src/corelib/json/qjsonobject.h b/src/corelib/json/qjsonobject.h
index 5f24ac3ac8..19c938fd83 100644
--- a/src/corelib/json/qjsonobject.h
+++ b/src/corelib/json/qjsonobject.h
@@ -105,7 +105,7 @@ public:
         typedef QJsonValue value_type;
         typedef QJsonValueRef reference;
 
-        Q_DECL_CONSTEXPR inline iterator() : o(0), i(0) {}
+        Q_DECL_CONSTEXPR inline iterator() : o(Q_NULLPTR), i(0) {}
         Q_DECL_CONSTEXPR inline iterator(QJsonObject *obj, int index) : o(obj), i(index) {}
 
         inline QString key() const { return o->keyAt(i); }
@@ -147,7 +147,7 @@ public:
         typedef QJsonValue value_type;
         typedef QJsonValue reference;
 
-        Q_DECL_CONSTEXPR inline const_iterator() : o(0), i(0) {}
+        Q_DECL_CONSTEXPR inline const_iterator() : o(Q_NULLPTR), i(0) {}
         Q_DECL_CONSTEXPR inline const_iterator(const QJsonObject *obj, int index)
             : o(obj), i(index) {}
         inline const_iterator(const iterator &other)