diff --git a/libraries/qml/src/qml/OffscreenSurface.cpp b/libraries/qml/src/qml/OffscreenSurface.cpp
index a7290a4d7d..d9fc8117bd 100644
--- a/libraries/qml/src/qml/OffscreenSurface.cpp
+++ b/libraries/qml/src/qml/OffscreenSurface.cpp
@@ -214,6 +214,8 @@ bool OffscreenSurface::eventFilter(QObject* originalDestination, QEvent* event)
                     fakeMouseEventType = QEvent::MouseButtonRelease;
                     fakeMouseButtons = Qt::NoButton;
                     break;
+                default:
+                    Q_UNREACHABLE();
             }
             // Same case as OffscreenUi.cpp::eventFilter: touch events are always being accepted so we now use mouse events and consider one touch, touchPoints()[0].
             QMouseEvent fakeMouseEvent(fakeMouseEventType, originalEvent->touchPoints()[0].pos(), fakeMouseButton, fakeMouseButtons, Qt::NoModifier);