diff --git a/src/plugins/coreplugin/outputwindow.cpp b/src/plugins/coreplugin/outputwindow.cpp
index e89f999a478..6c33b8dafe2 100644
--- a/src/plugins/coreplugin/outputwindow.cpp
+++ b/src/plugins/coreplugin/outputwindow.cpp
@@ -232,6 +232,12 @@ void OutputWindow::wheelEvent(QWheelEvent *e)
     if (d->zoomEnabled) {
         if (e->modifiers() & Qt::ControlModifier) {
             float delta = e->angleDelta().y() / 120.f;
+
+            // Workaround for QTCREATORBUG-22721, remove when properly fixed in Qt
+            const float newSize = float(font().pointSizeF()) + delta;
+            if (delta < 0.f && newSize < 4.f)
+                return;
+
             zoomInF(delta);
             emit wheelZoom();
             return;