diff --git a/nixos/modules/services/web-servers/phpfpm/default.nix b/nixos/modules/services/web-servers/phpfpm/default.nix
index 2c73da10394..3db19c781d0 100644
--- a/nixos/modules/services/web-servers/phpfpm/default.nix
+++ b/nixos/modules/services/web-servers/phpfpm/default.nix
@@ -47,6 +47,7 @@ let
             Path to the unix socket file on which to accept FastCGI requests.
             <note><para>This option is read-only and managed by NixOS.</para></note>
           '';
+          example = "${runtimeDir}/<name>.sock";
         };
 
         listen = mkOption {