diff --git a/util.py b/util.py
index 1116944..184ea12 100644
--- a/util.py
+++ b/util.py
@@ -167,7 +167,7 @@ def pipe_no_wait():
     """ Generate a non-block pipe used to fetch the STDERR of ffmpeg.
     """
 
-    if platform == "linux" or platform == "linux2" or platform == "darwin":
+    if platform == "linux" or platform == "linux2" or platform == "darwin" or platform.startswith("openbsd"):
         import fcntl
         import os