diff --git a/plugins/qca-logger/qca-logger.cpp b/plugins/qca-logger/qca-logger.cpp
index b46ab6d0..a80cc365 100644
--- a/plugins/qca-logger/qca-logger.cpp
+++ b/plugins/qca-logger/qca-logger.cpp
@@ -47,14 +47,14 @@ public:
 
     void logTextMessage(const QString &message, enum QCA::Logger::Severity severity) override
     {
-        _stream << now() << " " << severityName(severity) << " " << message << endl;
+        _stream << now() << " " << severityName(severity) << " " << message << Qt::endl;
     }
 
     void logBinaryMessage(const QByteArray &blob, enum QCA::Logger::Severity severity) override
     {
         Q_UNUSED(blob);
         _stream << now() << " " << severityName(severity) << " "
-                << "Binary blob not implemented yet" << endl;
+                << "Binary blob not implemented yet" << Qt::endl;
     }
 
 private:
diff --git a/tools/qcatool/main.cpp b/tools/qcatool/main.cpp
index a6d3f341..f8c29246 100644
--- a/tools/qcatool/main.cpp
+++ b/tools/qcatool/main.cpp
@@ -85,14 +85,14 @@ public:
 
     void logTextMessage(const QString &message, enum QCA::Logger::Severity severity) override
     {
-        _stream << now() << " " << severityName(severity) << " " << message << endl;
+        _stream << now() << " " << severityName(severity) << " " << message << Qt::endl;
     }
 
     void logBinaryMessage(const QByteArray &blob, enum QCA::Logger::Severity severity) override
     {
         Q_UNUSED(blob);
         _stream << now() << " " << severityName(severity) << " "
-                << "Binary blob not implemented yet" << endl;
+                << "Binary blob not implemented yet" << Qt::endl;
     }
 
 private:
diff --git a/unittest/bigintunittest/bigintunittest.cpp b/unittest/bigintunittest/bigintunittest.cpp
index 9d850b1d..a94d15cc 100644
--- a/unittest/bigintunittest/bigintunittest.cpp
+++ b/unittest/bigintunittest/bigintunittest.cpp
@@ -87,7 +87,7 @@ void BigIntUnitTest::allTests()
     // Check if the stream operator is any good
     QString     testString;
     QTextStream ts(&testString, QIODevice::WriteOnly);
-    ts << a << b << c << endl;
+    ts << a << b << c << Qt::endl;
     QCOMPARE(testString, QStringLiteral("4000000000000-40000000000002000000000000\n"));
 
     // Botan's addition tests