diff --git a/src/render/Renderer.cpp b/src/render/Renderer.cpp
index fbc34910..a2b7c60a 100644
--- a/src/render/Renderer.cpp
+++ b/src/render/Renderer.cpp
@@ -1305,7 +1305,8 @@ void CHyprRenderer::renderMonitor(PHLMONITOR pMonitor, bool commit) {
 
     if (pMonitor->m_scheduledRecalc) {
         pMonitor->m_scheduledRecalc = false;
-        pMonitor->m_activeWorkspace->m_space->recalculate();
+        if (pMonitor->m_activeWorkspace) // might be missing (mirror)
+            pMonitor->m_activeWorkspace->m_space->recalculate();
     }
 
     if (!pMonitor->m_output->needsFrame && pMonitor->m_forceFullFrames == 0)