diff --git a/src/network/access/qnetworkrequest.cpp b/src/network/access/qnetworkrequest.cpp
index c99c5f05b86..69f76f3f8c4 100644
--- a/src/network/access/qnetworkrequest.cpp
+++ b/src/network/access/qnetworkrequest.cpp
@@ -1315,7 +1315,7 @@ static QVariant parseHeaderValue(QNetworkRequest::KnownHeaders header, const QBy
 }
 
 QNetworkHeadersPrivate::RawHeadersList::ConstIterator
-QNetworkHeadersPrivate::findRawHeader(const QByteArray &key) const
+QNetworkHeadersPrivate::findRawHeader(QByteArrayView key) const
 {
     RawHeadersList::ConstIterator it = rawHeaders.constBegin();
     RawHeadersList::ConstIterator end = rawHeaders.constEnd();
diff --git a/src/network/access/qnetworkrequest_p.h b/src/network/access/qnetworkrequest_p.h
index 57fb7b35bea..8d826fb3d20 100644
--- a/src/network/access/qnetworkrequest_p.h
+++ b/src/network/access/qnetworkrequest_p.h
@@ -40,7 +40,7 @@ public:
     AttributesMap attributes;
     QPointer<QObject> originatingObject;
 
-    RawHeadersList::ConstIterator findRawHeader(const QByteArray &key) const;
+    RawHeadersList::ConstIterator findRawHeader(QByteArrayView key) const;
     RawHeadersList allRawHeaders() const;
     QList<QByteArray> rawHeadersKeys() const;
     void setRawHeader(const QByteArray &key, const QByteArray &value);