diff --git a/nss_cache/sources/httpsource.py b/nss_cache/sources/httpsource.py
index c7be405..8fa0a13 100644
--- a/nss_cache/sources/httpsource.py
+++ b/nss_cache/sources/httpsource.py
@@ -91,7 +91,7 @@ def _SetDefaults(self, configuration):
         if "group_url" not in configuration:
             configuration["group_url"] = self.GROUP_URL
         if "netgroup_url" not in configuration:
-            configuration["netgroup_url"] = self.GROUP_URL
+            configuration["netgroup_url"] = self.NETGROUP_URL
         if "sshkey_url" not in configuration:
             configuration["sshkey_url"] = self.SSHKEY_URL
         if "retry_delay" not in configuration: