diff --git a/gui/ecp5/mainwindow.cc b/gui/ecp5/mainwindow.cc
index 043a6b86..913c2520 100644
--- a/gui/ecp5/mainwindow.cc
+++ b/gui/ecp5/mainwindow.cc
@@ -47,7 +47,7 @@ MainWindow::~MainWindow() {}
 
 void MainWindow::newContext(Context *ctx)
 {
-    std::string title = "nextpnr-generic - " + ctx->getChipName() + " ( " + chipArgs.package + " )";
+    std::string title = "nextpnr-ecp5 - " + ctx->getChipName() + " ( " + chipArgs.package + " )";
     setWindowTitle(title.c_str());
 }
 
diff --git a/gui/ecp5/mainwindow.h b/gui/ecp5/mainwindow.h
index dc283cc7..65493fbc 100644
--- a/gui/ecp5/mainwindow.h
+++ b/gui/ecp5/mainwindow.h
@@ -48,8 +48,6 @@ class MainWindow : public BaseMainWindow
   private:
     QAction *actionLoadLPF;
     QAction *actionSaveConfig;
-
-    ArchArgs chipArgs;
 };
 
 NEXTPNR_NAMESPACE_END