diff --git a/rffmpeg.py b/rffmpeg.py
index 238a2cc..e2bd7b7 100755
--- a/rffmpeg.py
+++ b/rffmpeg.py
@@ -269,7 +269,7 @@ def setup_command(target_host):
     # Parse and re-quote any problematic arguments
     for arg in cli_ffmpeg_args:
         # Match bad shell characters: * ( ) whitespace
-        if re.search('[*()\s]', arg):
+        if re.search('[*()\s|]', arg):
             rffmpeg_command.append('"{}"'.format(arg))
         else:
             rffmpeg_command.append('{}'.format(arg))