diff --git a/qt/aqt/browser/browser.py b/qt/aqt/browser/browser.py
index d0c0a308a..72eb654dd 100644
--- a/qt/aqt/browser/browser.py
+++ b/qt/aqt/browser/browser.py
@@ -382,7 +382,7 @@ class Browser(QMainWindow):
 
             editor._links["preview"] = lambda _editor: self.onTogglePreview()
             editor.web.eval(
-                "$editorToolbar.then(({{ notetypeButtons }}) => notetypeButtons.appendButton({{ component: editorToolbar.PreviewButton }}, -1));"
+                "$editorToolbar.then(({ notetypeButtons }) => notetypeButtons.appendButton({ component: editorToolbar.PreviewButton }));"
             )
 
         gui_hooks.editor_did_init.append(add_preview_button)