diff --git a/src/helpers/Monitor.cpp b/src/helpers/Monitor.cpp
index 685009fd..6e11e1e6 100644
--- a/src/helpers/Monitor.cpp
+++ b/src/helpers/Monitor.cpp
@@ -60,7 +60,8 @@ void CMonitor::onConnect(bool noRule) {
 
         Debug::log(LOG, "Removing monitor {} from realMonitors", szName);
 
-        std::erase_if(g_pCompositor->m_vRealMonitors, [&](SP<CMonitor>& el) { return el.get() == this; });
+        std::erase_if(g_pCompositor->m_vMonitors, [&](SP<CMonitor>& el) { return el.get() == this || !el || !el->output; });
+        std::erase_if(g_pCompositor->m_vRealMonitors, [&](SP<CMonitor>& el) { return el.get() == this || !el || !el->output; });
     });
 
     listeners.state = output->events.state.registerListener([this](std::any d) {
@@ -341,7 +342,7 @@ void CMonitor::onDisconnect(bool destroy) {
 
         g_pHyprRenderer->m_pMostHzMonitor = pMonitorMostHz;
     }
-    std::erase_if(g_pCompositor->m_vMonitors, [&](SP<CMonitor>& el) { return el.get() == this; });
+    std::erase_if(g_pCompositor->m_vMonitors, [&](SP<CMonitor>& el) { return el.get() == this || !el || !el->output; });
 }
 
 void CMonitor::addDamage(const pixman_region32_t* rg) {