diff --git a/src/qt/qt_rendererstack.cpp b/src/qt/qt_rendererstack.cpp
index 85a0bb096..a65f056b6 100644
--- a/src/qt/qt_rendererstack.cpp
+++ b/src/qt/qt_rendererstack.cpp
@@ -464,7 +464,7 @@ RendererStack::createRenderer(Renderer renderer)
 void
 RendererStack::blit(int x, int y, int w, int h)
 {
-    if ((x < 0) || (y < 0) || (w <= 0) || (h <= 0) || (w > 2048) || (h > 2048) || (switchInProgress) || (monitors[m_monitor_index].target_buffer == NULL) || imagebufs.empty() || std::get<std::atomic_flag *>(imagebufs[currentBuf])->test_and_set()) {
+    if ((x < 0) || (y < 0) || (w <= 0) || (h <= 0) || (w > 2048) || (h > 2048) || ((w + y) > 2048) || ((h + x) > 2048) || (switchInProgress) || (monitors[m_monitor_index].target_buffer == NULL) || imagebufs.empty() || std::get<std::atomic_flag *>(imagebufs[currentBuf])->test_and_set()) {
         video_blit_complete_monitor(m_monitor_index);
         return;
     }