diff --git a/src/corelib/text/qbytearray.h b/src/corelib/text/qbytearray.h
index 88101c0b06..8989eb27a6 100644
--- a/src/corelib/text/qbytearray.h
+++ b/src/corelib/text/qbytearray.h
@@ -249,9 +249,9 @@ public:
     QByteArray &append(char c);
     inline QByteArray &append(qsizetype count, char c);
     QByteArray &append(const char *s)
-    { return append(QByteArrayView(s, qsizetype(qstrlen(s)))); }
+    { return append(s, -1); }
     QByteArray &append(const char *s, qsizetype len)
-    { return append(QByteArrayView(s, len)); }
+    { return append(QByteArrayView(s, len < 0 ? qsizetype(qstrlen(s)) : len)); }
     QByteArray &append(const QByteArray &a);
     QByteArray &append(QByteArrayView a)
     { return insert(size(), a); }
diff --git a/tests/auto/corelib/text/qbytearray/tst_qbytearray.cpp b/tests/auto/corelib/text/qbytearray/tst_qbytearray.cpp
index cecd0f1584..ae65b8d27e 100644
--- a/tests/auto/corelib/text/qbytearray/tst_qbytearray.cpp
+++ b/tests/auto/corelib/text/qbytearray/tst_qbytearray.cpp
@@ -957,6 +957,7 @@ void tst_QByteArray::append()
     QCOMPARE(QByteArray().append(2, 'a'), QByteArray("aa"));
     QCOMPARE(QByteArray().append(QByteArray("data")), QByteArray("data"));
     QCOMPARE(QByteArray().append(data), QByteArray("data"));
+    QCOMPARE(QByteArray().append(data, -1), QByteArray("data"));
     QCOMPARE(QByteArray().append(data, 2), QByteArray("da"));
     QCOMPARE(QByteArray().append(QByteArrayView(data)), QByteArray("data"));