diff --git a/src/imports/testlib/TestCase.qml b/src/imports/testlib/TestCase.qml
index 5484d5a96b28a435858ac486ed237adaa8ad846c..7584241ca6648624a5323180b3de15e1c568da82 100644
--- a/src/imports/testlib/TestCase.qml
+++ b/src/imports/testlib/TestCase.qml
@@ -143,7 +143,7 @@ Item {
             if ("mapFromItem" in o && "mapToItem" in o) {
                 return "declarativeitem";  // @todo improve detection of declarative items
             } else if ("x" in o && "y" in o && "z" in o) {
-                return "vector3d"; // Qt3D vector
+                return "vector3d"; // Qt 3D vector
             }
             return "object";
         } else if (o instanceof Function) {
diff --git a/src/qmltest/quicktest.cpp b/src/qmltest/quicktest.cpp
index 1dc0e3fecb0622dfea80b918ab4eaacb6d6f7493..2db68bad164da8d1b67730e4ac23d92ab20360d5 100644
--- a/src/qmltest/quicktest.cpp
+++ b/src/qmltest/quicktest.cpp
@@ -344,7 +344,7 @@ int quick_test_main(int argc, char **argv, const char *name, const char *sourceD
                 rootobj.setWindowShown(true);
             if (!rootobj.hasQuit && rootobj.hasTestCase())
                 eventLoop.exec();
-            // view->hide(); Causes a crash in Qt3D due to deletion of the GL context, see QTBUG-27696
+            // view->hide(); Causes a crash in Qt 3D due to deletion of the GL context, see QTBUG-27696
         }
     }
 
diff --git a/src/quick/items/qquickevents_p_p.h b/src/quick/items/qquickevents_p_p.h
index 469ae9d0e42aaa413aacbebd4a4d5c9ec7ac5b3f..6f1b152ad3b9c842abe0b025ad03cc842561873f 100644
--- a/src/quick/items/qquickevents_p_p.h
+++ b/src/quick/items/qquickevents_p_p.h
@@ -93,7 +93,7 @@ private:
     QKeyEvent event;
 };
 
-// used in QtLocation
+// used in Qt Location
 class Q_QUICK_PRIVATE_EXPORT QQuickMouseEvent : public QObject
 {
     Q_OBJECT
diff --git a/src/quick/items/qquickmousearea_p.h b/src/quick/items/qquickmousearea_p.h
index ad15167b106b29eeaa5e5856e174c167564a4563..fa32f32b657c3dbd222084fb166b726b932aafcb 100644
--- a/src/quick/items/qquickmousearea_p.h
+++ b/src/quick/items/qquickmousearea_p.h
@@ -123,7 +123,7 @@ private:
 
 class QQuickMouseAreaPrivate;
 class QQuickWheelEvent;
-// used in QtLocation
+// used in Qt Location
 class Q_QUICK_PRIVATE_EXPORT QQuickMouseArea : public QQuickItem
 {
     Q_OBJECT
diff --git a/tests/auto/qml/qjsengine/tst_qjsengine.cpp b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
index 89289f3a9f40d0b3143fb1c2113986d6dc3862bb..23c32c163f08c12124c27966c54442a39944b5cd 100644
--- a/tests/auto/qml/qjsengine/tst_qjsengine.cpp
+++ b/tests/auto/qml/qjsengine/tst_qjsengine.cpp
@@ -1917,7 +1917,7 @@ void tst_QJSEngine::jsFunctionDeclarationAsStatement()
     // at the beginning of chapter 12 in ECMA-262 5th edition, where it's
     // recommended that implementations either disallow this usage or issue
     // a warning.
-    // Since we had a bug report long ago about QtScript not supporting this
+    // Since we had a bug report long ago about Qt Script not supporting this
     // "feature" (and thus deviating from other implementations), we still
     // check this behavior.
 
@@ -2625,7 +2625,7 @@ void tst_QJSEngine::qRegExpInport()
 }
 
 // QScriptValue::toDateTime() returns a local time, whereas JS dates
-// are always stored as UTC. QtScript must respect the current time
+// are always stored as UTC. Qt Script must respect the current time
 // zone, and correctly adjust for daylight saving time that may be in
 // effect at a given date (QTBUG-9770).
 void tst_QJSEngine::dateRoundtripJSQtJS()
diff --git a/tests/auto/qml/qquickworkerscript/tst_qquickworkerscript.cpp b/tests/auto/qml/qquickworkerscript/tst_qquickworkerscript.cpp
index a2bf06c2ba6a2b205cb4de499bf5df9d66cefaf5..ed8fb9f56f9e86e86f97b796a58c2e675cee65dc 100644
--- a/tests/auto/qml/qquickworkerscript/tst_qquickworkerscript.cpp
+++ b/tests/auto/qml/qquickworkerscript/tst_qquickworkerscript.cpp
@@ -138,7 +138,7 @@ void tst_QQuickWorkerScript::messaging_data()
     QTest::newRow("variant list") << qVariantFromValue((QVariantList() << "a" << "b" << "c"));
     QTest::newRow("date time") << qVariantFromValue(QDateTime::currentDateTime());
 #ifndef QT_NO_REGEXP
-    // QtScript's QScriptValue -> QRegExp uses RegExp2 pattern syntax
+    // Qt Script's QScriptValue -> QRegExp uses RegExp2 pattern syntax
     QTest::newRow("regexp") << qVariantFromValue(QRegExp("^\\d\\d?$", Qt::CaseInsensitive, QRegExp::RegExp2));
 #endif
 }