diff --git a/dovecot.nix b/dovecot.nix
index e112293..1bc41b6 100644
--- a/dovecot.nix
+++ b/dovecot.nix
@@ -236,7 +236,7 @@ in {
 
         mailboxes = cfg.mailboxes;
 
-        modules = with pkgs; [ dovecot_pidgeonhole ];
+        modules = with pkgs; [ dovecot_pigeonhole ];
         protocols = [ "sieve" ];
 
         mailPlugins.globally.enable = [ "old_stats" ];