diff --git a/nixos/modules/services/logging/logrotate.nix b/nixos/modules/services/logging/logrotate.nix
index 6887ab1e805..ec5f2e9add0 100644
--- a/nixos/modules/services/logging/logrotate.nix
+++ b/nixos/modules/services/logging/logrotate.nix
@@ -21,6 +21,7 @@ in
 
       config = mkOption {
         default = "";
+        type = type.lines;
         description = ''
           The contents of the logrotate config file
         '';