diff --git a/src/Window.cpp b/src/Window.cpp
index c63209a0..4c8ff509 100644
--- a/src/Window.cpp
+++ b/src/Window.cpp
@@ -194,7 +194,14 @@ void CWindow::updateWindowDecos() {
 
     m_vDecosToRemove.clear();
 
+    // make a copy because updateWindow can remove decos.
+    std::vector<IHyprWindowDecoration*> decos;
+
     for (auto& wd : m_dWindowDecorations) {
+        decos.push_back(wd.get());
+    }
+
+    for (auto& wd : decos) {
         wd->updateWindow(this);
     }
 }