diff --git a/morph/lib/customize-monitoring.nix b/morph/lib/customize-monitoring.nix
index 564f056cfb525b88fe44043a065e075d957bcb47..331a2dbd7c9875acbf72ae22da786f4bc868cfc0 100644
--- a/morph/lib/customize-monitoring.nix
+++ b/morph/lib/customize-monitoring.nix
@@ -20,10 +20,11 @@
 , vpnClientIPs
 
   # A list of VPN clients (IP addresses or hostnames) as strings indicating
-  # which nodes to scrape metrics from.
+  # which nodes to scrape "nodeExporter" metrics from.
 , nodeExporterTargets
 
-  # ...
+  # A list of VPN clients (IP addresses or hostnames) as strings indicating
+  # which nodes to scrape "nginxExporter" metrics from.
 , nginxExporterTargets ? []
 
   # A string giving the NixOS state version for the system.