diff --git a/management/daemon.py b/management/daemon.py
index 3c712303..c0b9ae61 100755
--- a/management/daemon.py
+++ b/management/daemon.py
@@ -561,7 +561,7 @@ def munin_cgi(filename):
 	if filename == "":
 		return ("a path must be specified", 404)
 
-	query_str = request.query_string.decode("utf-8", 'ignore')
+	query_str = request.query_string.decode("utf-8", 'ignore').replace('"', r'\"')
 
 	env = {'PATH_INFO': '/%s/' % filename, 'REQUEST_METHOD': 'GET', 'QUERY_STRING': query_str}
 	code, binout = utils.shell('check_output',