diff --git a/warden3/warden_client/warden_client.py b/warden3/warden_client/warden_client.py
index 752a9ec977b65fc0609c78312c7cf6d49fcc886a..9f13ab7c8501f3eedb62f93344e31061bcd0f724 100644
--- a/warden3/warden_client/warden_client.py
+++ b/warden3/warden_client/warden_client.py
@@ -430,5 +430,5 @@ class Client(object):
 def read_cfg(cfgfile):
     abspath = path.join(path.dirname(__file__), cfgfile)
     with open(abspath, "r") as f:
-        stripcomments = "\n".join((l for l in f if not l.lstrip().startswith("#", "//")))
+        stripcomments = "\n".join((l for l in f if not l.lstrip().startswith(("#", "//"))))
         return json.loads(stripcomments)
diff --git a/warden3/warden_server/warden_server.py b/warden3/warden_server/warden_server.py
index 2c38a36df9c3686e45ea42c5a96f7bd410420dda..cae6178ae65029a6a2107e85f9ca509b3ff3a3b9 100755
--- a/warden3/warden_server/warden_server.py
+++ b/warden3/warden_server/warden_server.py
@@ -879,7 +879,7 @@ def read_ini(path):
 
 def read_cfg(path):
     with open(path, "r") as f:
-        stripcomments = "\n".join((l for l in f if not l.lstrip().startswith("#")))
+        stripcomments = "\n".join((l for l in f if not l.lstrip().startswith(("#", "//"))))
         conf = json.loads(stripcomments)
 
     # Lowercase keys