diff --git a/src/corelib/mimetypes/qmimeprovider.cpp b/src/corelib/mimetypes/qmimeprovider.cpp
index d5b88259726..5e1447aaa9b 100644
--- a/src/corelib/mimetypes/qmimeprovider.cpp
+++ b/src/corelib/mimetypes/qmimeprovider.cpp
@@ -458,6 +458,7 @@ void QMimeBinaryProvider::addAllMimeTypes(QList<QMimeType> &result)
 void QMimeBinaryProvider::loadMimeTypePrivate(QMimeTypePrivate &data)
 {
 #ifdef QT_NO_XMLSTREAMREADER
+    Q_UNUSED(data);
     qWarning("Cannot load mime type since QXmlStreamReader is not available.");
     return;
 #else
diff --git a/src/corelib/mimetypes/qmimetypeparser.cpp b/src/corelib/mimetypes/qmimetypeparser.cpp
index d10575cfe96..815e0aa03bf 100644
--- a/src/corelib/mimetypes/qmimetypeparser.cpp
+++ b/src/corelib/mimetypes/qmimetypeparser.cpp
@@ -194,8 +194,9 @@ static CreateMagicMatchRuleResult createMagicMatchRule(const QXmlStreamAttribute
 bool QMimeTypeParserBase::parse(QIODevice *dev, const QString &fileName, QString *errorMessage)
 {
 #ifdef QT_NO_XMLSTREAMREADER
+    Q_UNUSED(dev);
     if (errorMessage)
-        *errorMessage = QString::fromLatin1("QXmlStreamReader is not available, cannot parse.");
+        *errorMessage = QString::fromLatin1("QXmlStreamReader is not available, cannot parse '%1'.").arg(fileName);
     return false;
 #else
     QMimeTypePrivate data;