diff --git a/nixos/modules/services/databases/postgresql.nix b/nixos/modules/services/databases/postgresql.nix
index 900185fbbdf7..ee8cdf2d285f 100644
--- a/nixos/modules/services/databases/postgresql.nix
+++ b/nixos/modules/services/databases/postgresql.nix
@@ -163,7 +163,7 @@ in
               '';
               example = literalExample ''
                 {
-                  "DATABASE nextcloud" = "ALL PRIVILEGES";
+                  "DATABASE \"nextcloud\"" = "ALL PRIVILEGES";
                   "ALL TABLES IN SCHEMA public" = "ALL PRIVILEGES";
                 }
               '';