diff --git a/webview/platforms/qt.py b/webview/platforms/qt.py
index b8272348..9ed19b14 100755
--- a/webview/platforms/qt.py
+++ b/webview/platforms/qt.py
@@ -324,6 +324,10 @@ def __init__(self, window):
                 '--enable-features=AutoplayIgnoreWebAudio',
             )
 
+        user_agent = settings.get('user_agent') or _settings['user_agent']
+        if user_agent and is_webengine:
+            self.view.page().profile().setHttpUserAgent(user_agent)
+
         if _settings['debug'] and is_webengine:
             # Initialise Remote debugging (need to be done only once)
             if not BrowserView.inspector_port: