diff --git a/borders-plus-plus/main.cpp b/borders-plus-plus/main.cpp
index 4b1338a..c58ad80 100644
--- a/borders-plus-plus/main.cpp
+++ b/borders-plus-plus/main.cpp
@@ -19,6 +19,9 @@ APICALL EXPORT std::string PLUGIN_API_VERSION() {
 }
 
 static void onNewWindow(PHLWINDOW window) {
+    if (std::ranges::any_of(window->m_windowDecorations, [](const auto& d) { return d->getDisplayName() == "Borders++"; }))
+        return;
+
     HyprlandAPI::addWindowDecoration(PHANDLE, window, makeUnique<CBordersPlusPlus>(window));
 }