diff --git a/src/layout/DwindleLayout.cpp b/src/layout/DwindleLayout.cpp
index f779147e..18f0d9f2 100644
--- a/src/layout/DwindleLayout.cpp
+++ b/src/layout/DwindleLayout.cpp
@@ -247,7 +247,8 @@ void CHyprDwindleLayout::onWindowCreatedTiling(CWindow* pWindow) {
     }
 
     // first, check if OPENINGON isn't too big.
-    if (const auto MAXSIZE = g_pXWaylandManager->getMaxSizeForWindow(pWindow); MAXSIZE.x < OPENINGON->size.x || MAXSIZE.y < OPENINGON->size.y) {
+    const auto PREDSIZEMAX = OPENINGON ? Vector2D(OPENINGON->size.x, OPENINGON->size.y) : PMONITOR->vecSize;
+    if (const auto MAXSIZE = g_pXWaylandManager->getMaxSizeForWindow(pWindow); MAXSIZE.x < PREDSIZEMAX.x || MAXSIZE.y < PREDSIZEMAX.y) {
         // we can't continue. make it floating.
         pWindow->m_bIsFloating = true;
         m_lDwindleNodesData.remove(*PNODE);