diff --git a/ntfy/terminal.py b/ntfy/terminal.py
index 17e323c..a3173f9 100644
--- a/ntfy/terminal.py
+++ b/ntfy/terminal.py
@@ -7,7 +7,7 @@
 def linux_window_is_focused():
     xprop_cmd = shlex.split('xprop -root _NET_ACTIVE_WINDOW')
     try:
-        xprop_window_id = int(check_output(xprop_cmd, stdout=PIPE, stderr=PIPE).split()[-1], 16)
+        xprop_window_id = int(check_output(xprop_cmd, stderr=PIPE).split()[-1], 16)
     except CalledProcessError:
         return False
     except ValueError: