diff --git a/src/corelib/tools/qcryptographichash.cpp b/src/corelib/tools/qcryptographichash.cpp
index cda3c9612a6..8163ddf216d 100644
--- a/src/corelib/tools/qcryptographichash.cpp
+++ b/src/corelib/tools/qcryptographichash.cpp
@@ -243,6 +243,7 @@ public:
 
     void reset() noexcept;
     void addData(QByteArrayView bytes) noexcept;
+    bool addData(QIODevice *dev);
     void finalize() noexcept;
     // when not called from the static hash() function, this function needs to be
     // called with finalizeMutex held (finalize() will do that):
@@ -698,6 +699,11 @@ void QCryptographicHashPrivate::addData(QByteArrayView bytes) noexcept
   \since 5.0
  */
 bool QCryptographicHash::addData(QIODevice *device)
+{
+    return d->addData(device);
+}
+
+bool QCryptographicHashPrivate::addData(QIODevice *device)
 {
     if (!device->isReadable())
         return false;
@@ -709,7 +715,7 @@ bool QCryptographicHash::addData(QIODevice *device)
     qint64 length;
 
     while ((length = device->read(buffer, sizeof(buffer))) > 0)
-        d->addData({buffer, qsizetype(length)}); // length always <= 1024
+        addData({buffer, qsizetype(length)}); // length always <= 1024
 
     return device->atEnd();
 }