diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index 7edbd7a8d79..1bf6c499b53 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -2941,7 +2941,7 @@ QUrl QUrl::fromEncoded(QByteArrayView input, ParsingMode mode)
 QString QUrl::fromPercentEncoding(const QByteArray &input)
 {
     QByteArray ba = QByteArray::fromPercentEncoding(input);
-    return QString::fromUtf8(ba, ba.size());
+    return QString::fromUtf8(ba);
 }
 
 /*!
diff --git a/src/corelib/serialization/qjsoncbor.cpp b/src/corelib/serialization/qjsoncbor.cpp
index 48cd717cf32..0f72dc3031a 100644
--- a/src/corelib/serialization/qjsoncbor.cpp
+++ b/src/corelib/serialization/qjsoncbor.cpp
@@ -55,7 +55,7 @@ static QString encodeByteArray(const QCborContainerPrivate *d, qsizetype idx, QC
     else
         data = data.toBase64(QByteArray::Base64UrlEncoding | QByteArray::OmitTrailingEquals);
 
-    return QString::fromLatin1(data, data.size());
+    return QString::fromLatin1(data);
 }
 
 static QString makeString(const QCborContainerPrivate *d, qsizetype idx,
diff --git a/src/plugins/tls/shared/qasn1element.cpp b/src/plugins/tls/shared/qasn1element.cpp
index 97be46866d1..4ad3e1351a1 100644
--- a/src/plugins/tls/shared/qasn1element.cpp
+++ b/src/plugins/tls/shared/qasn1element.cpp
@@ -343,9 +343,9 @@ QString QAsn1Element::toString() const
     if (mType == PrintableStringType || mType == TeletexStringType
         || mType == Rfc822NameType || mType == DnsNameType
         || mType == UniformResourceIdentifierType)
-        return QString::fromLatin1(mValue, mValue.size());
+        return QString::fromLatin1(mValue);
     if (mType == Utf8StringType)
-        return QString::fromUtf8(mValue, mValue.size());
+        return QString::fromUtf8(mValue);
 
     return QString();
 }