diff --git a/default.nix b/default.nix
index 74c47c2..c1be464 100644
--- a/default.nix
+++ b/default.nix
@@ -113,7 +113,7 @@ in
 
     vmailUserName = mkOption {
       type = types.str;
-      default = "vmail";
+      default = "vmailer";
       description = ''
         The user name and group name of the user that owns the directory where all
         the mail is stored.
@@ -122,7 +122,7 @@ in
 
     vmailGroupName = mkOption {
       type = types.str;
-      default = "vmail";
+      default = "vmailer";
       description = ''
         The user name and group name of the user that owns the directory where all
         the mail is stored.