diff --git a/src/corelib/serialization/qcborvalue.cpp b/src/corelib/serialization/qcborvalue.cpp
index 37a2ff6473..e4972a30ba 100644
--- a/src/corelib/serialization/qcborvalue.cpp
+++ b/src/corelib/serialization/qcborvalue.cpp
@@ -1861,7 +1861,6 @@ QCborValue::QCborValue(const QUrl &url)
     t = Url;
     container->elements[1].type = String;
 }
-#endif
 
 #if QT_CONFIG(regularexpression)
 /*!
@@ -1900,6 +1899,7 @@ QCborValue::QCborValue(const QUuid &uuid)
     // change our type
     t = Uuid;
 }
+#endif
 
 // destructor
 void QCborValue::dispose()
@@ -2031,7 +2031,6 @@ QUrl QCborValue::toUrl(const QUrl &defaultValue) const
 
     return QUrl::fromEncoded(byteData->asByteArrayView());
 }
-#endif
 
 #if QT_CONFIG(regularexpression)
 /*!
@@ -2074,6 +2073,7 @@ QUuid QCborValue::toUuid(const QUuid &defaultValue) const
 
     return QUuid::fromRfc4122(byteData->asByteArrayView());
 }
+#endif
 
 /*!
     \fn QCborArray QCborValue::toArray() const
@@ -2896,13 +2896,13 @@ size_t qHash(const QCborValue &value, size_t seed)
 #ifndef QT_BOOTSTRAPPED
     case QCborValue::Url:
         return qHash(value.toUrl(), seed);
-#endif
-#if QT_CONFIG(regularexpression)
+#  if QT_CONFIG(regularexpression)
     case QCborValue::RegularExpression:
         return qHash(value.toRegularExpression(), seed);
-#endif
+#  endif
     case QCborValue::Uuid:
         return qHash(value.toUuid(), seed);
+#endif
     case QCborValue::Invalid:
         return seed;
     default:
diff --git a/src/corelib/serialization/qcborvalue.h b/src/corelib/serialization/qcborvalue.h
index 39010210d9..a0383b0d15 100644
--- a/src/corelib/serialization/qcborvalue.h
+++ b/src/corelib/serialization/qcborvalue.h
@@ -166,11 +166,11 @@ public:
     explicit QCborValue(const QDateTime &dt);
 #ifndef QT_BOOTSTRAPPED
     explicit QCborValue(const QUrl &url);
-#endif
-#if QT_CONFIG(regularexpression)
+#  if QT_CONFIG(regularexpression)
     explicit QCborValue(const QRegularExpression &rx);
-#endif
+#  endif
     explicit QCborValue(const QUuid &uuid);
+#endif
 
     ~QCborValue() { if (container) dispose(); }
 
@@ -238,11 +238,13 @@ public:
     QByteArray toByteArray(const QByteArray &defaultValue = {}) const;
     QString toString(const QString &defaultValue = {}) const;
     QDateTime toDateTime(const QDateTime &defaultValue = {}) const;
+#ifndef QT_BOOTSTRAPPED
     QUrl toUrl(const QUrl &defaultValue = {}) const;
-#if QT_CONFIG(regularexpression)
+#  if QT_CONFIG(regularexpression)
     QRegularExpression toRegularExpression(const QRegularExpression &defaultValue = {}) const;
-#endif
+#  endif
     QUuid toUuid(const QUuid &defaultValue = {}) const;
+#endif
 
     // only forward-declared, need split functions
     QCborArray toArray() const;
@@ -385,13 +387,13 @@ public:
 #ifndef QT_BOOTSTRAPPED
     QUrl toUrl(const QUrl &defaultValue = {}) const
     { return concrete().toUrl(defaultValue); }
-#endif
-#if QT_CONFIG(regularexpression)
+#  if QT_CONFIG(regularexpression)
     QRegularExpression toRegularExpression(const QRegularExpression &defaultValue = {}) const
     { return concrete().toRegularExpression(defaultValue); }
-#endif
+#  endif
     QUuid toUuid(const QUuid &defaultValue = {}) const
     { return concrete().toUuid(defaultValue); }
+#endif
 
     // only forward-declared, need split functions. Implemented in qcbor{array,map}.h
     inline QCborArray toArray() const;
@@ -538,13 +540,13 @@ public:
 #ifndef QT_BOOTSTRAPPED
     QUrl toUrl(const QUrl &defaultValue = {}) const
     { return concrete().toUrl(defaultValue); }
-#endif
-#if QT_CONFIG(regularexpression)
+#  if QT_CONFIG(regularexpression)
     QRegularExpression toRegularExpression(const QRegularExpression &defaultValue = {}) const
     { return concrete().toRegularExpression(defaultValue); }
-#endif
+#  endif
     QUuid toUuid(const QUuid &defaultValue = {}) const
     { return concrete().toUuid(defaultValue); }
+#endif
 
     // only forward-declared, need split functions. Implemented in qcbor{array,map}.h
     QCborArray toArray() const;
diff --git a/src/corelib/serialization/qjsoncbor.cpp b/src/corelib/serialization/qjsoncbor.cpp
index 2b6bdd3687..89b15d4765 100644
--- a/src/corelib/serialization/qjsoncbor.cpp
+++ b/src/corelib/serialization/qjsoncbor.cpp
@@ -98,7 +98,6 @@ static QString maybeEncodeTag(const QCborContainerPrivate *d)
 {
     qint64 tag = d->elements.at(0).value;
     const Element &e = d->elements.at(1);
-    const ByteData *b = d->byteData(e);
 
     switch (tag) {
     case qint64(QCborKnownTags::DateTimeString):
@@ -115,8 +114,12 @@ static QString maybeEncodeTag(const QCborContainerPrivate *d)
         break;
 
     case qint64(QCborKnownTags::Uuid):
-        if (e.type == QCborValue::ByteArray && b->len == sizeof(QUuid))
+#ifndef QT_BOOTSTRAPPED
+        if (const ByteData *b = d->byteData(e); e.type == QCborValue::ByteArray && b
+                && b->len == sizeof(QUuid))
             return QUuid::fromRfc4122(b->asByteArrayView()).toString(QUuid::WithoutBraces);
+#endif
+        break;
     }
 
     // don't know what to do, bail out
@@ -586,15 +589,15 @@ QVariant QCborValue::toVariant() const
 #ifndef QT_BOOTSTRAPPED
     case Url:
         return toUrl();
-#endif
 
-#if QT_CONFIG(regularexpression)
+#  if QT_CONFIG(regularexpression)
     case RegularExpression:
         return toRegularExpression();
-#endif
+#  endif
 
     case Uuid:
         return toUuid();
+#endif
 
     case Invalid:
         return QVariant();
@@ -763,9 +766,9 @@ QCborValue QCborValue::fromVariant(const QVariant &variant)
 #ifndef QT_BOOTSTRAPPED
     case QMetaType::QUrl:
         return QCborValue(variant.toUrl());
-#endif
     case QMetaType::QUuid:
         return QCborValue(variant.toUuid());
+#endif
     case QMetaType::QVariantList:
         return QCborArray::fromVariantList(variant.toList());
     case QMetaType::QVariantMap: