diff --git a/Lib/webbrowser.py b/Lib/webbrowser.py
index 2a5729b446..eaaee95070 100755
--- a/Lib/webbrowser.py
+++ b/Lib/webbrowser.py
@@ -178,6 +178,9 @@ class BackgroundBrowser(GenericBrowser):
                 p = subprocess.Popen(cmdline)
             else:
                 p = subprocess.Popen(cmdline, close_fds=True,
+                                     stdin=subprocess.DEVNULL,
+                                     stdout=subprocess.DEVNULL,
+                                     stderr=subprocess.DEVNULL,
                                      start_new_session=True)
             return (p.poll() is None)
         except OSError: