diff --git a/src/events/Windows.cpp b/src/events/Windows.cpp
index 2beaea85..33b536b9 100644
--- a/src/events/Windows.cpp
+++ b/src/events/Windows.cpp
@@ -416,7 +416,7 @@ void Events::listener_unmapWindow(void* owner, void* data) {
     if (wasLastWindow) {
         auto PWINDOWCANDIDATE = g_pCompositor->vectorToWindowIdeal(PWINDOW->m_vRealPosition.goalv() + PWINDOW->m_vRealSize.goalv() / 2.f);
 
-        if (PWORKSPACE->m_bHasFullscreenWindow && (!PWINDOWCANDIDATE->m_bCreatedOverFullscreen || !PWINDOW->m_bIsFloating))
+        if (PWORKSPACE->m_bHasFullscreenWindow && ((PWINDOWCANDIDATE && !PWINDOWCANDIDATE->m_bCreatedOverFullscreen) || !PWINDOW->m_bIsFloating))
             PWINDOWCANDIDATE = g_pCompositor->getFullscreenWindowOnWorkspace(PWORKSPACE->m_iID);
 
         if (!PWINDOWCANDIDATE || PWINDOW == PWINDOWCANDIDATE || !PWINDOWCANDIDATE->m_bIsMapped || PWINDOWCANDIDATE->m_bHidden || PWINDOWCANDIDATE->m_bX11ShouldntFocus || PWINDOWCANDIDATE->m_iX11Type == 2 || PWINDOWCANDIDATE->m_iMonitorID != g_pCompositor->m_pLastMonitor->ID)