diff --git a/src/helpers/Monitor.cpp b/src/helpers/Monitor.cpp
index b87a995e..c728aeb4 100644
--- a/src/helpers/Monitor.cpp
+++ b/src/helpers/Monitor.cpp
@@ -196,6 +196,7 @@ void CMonitor::onDisconnect() {
         for (auto& ls : m_aLayerSurfaceLists[i]) {
             wlr_layer_surface_v1_destroy(ls->layerSurface);
         }
+        m_aLayerSurfaceLists[i].clear();
     }
 
     if (!BACKUPMON) {