diff --git a/src/backends/drm/virtual_egl_gbm_layer.cpp b/src/backends/drm/virtual_egl_gbm_layer.cpp
index b8b3938eb7..2244e21bea 100644
--- a/src/backends/drm/virtual_egl_gbm_layer.cpp
+++ b/src/backends/drm/virtual_egl_gbm_layer.cpp
@@ -90,7 +90,7 @@ bool VirtualEglGbmLayer::endRendering(const QRegion &damagedRegion)
         m_currentBuffer = buffer;
         m_currentDamage = damagedRegion;
     }
-    return buffer;
+    return !buffer.isNull();
 }
 
 QRegion VirtualEglGbmLayer::currentDamage() const