diff --git a/python_apps/media-monitor2/media/monitor/pure.py b/python_apps/media-monitor2/media/monitor/pure.py
index 2eedfe4b4..e808783a6 100644
--- a/python_apps/media-monitor2/media/monitor/pure.py
+++ b/python_apps/media-monitor2/media/monitor/pure.py
@@ -166,7 +166,7 @@ def walk_supported(directory, clean_empties=False):
 
 
 def file_locked(path):
-    proc = Popen(["lsof", path], stdout=PIPE)
+    proc = Popen(["lsof", '"%s"' % path], stdout=PIPE)
     out = proc.communicate()[0].strip('\r\n')
     return bool(out)