diff --git a/nixos/modules/services/misc/octoprint.nix b/nixos/modules/services/misc/octoprint.nix
index 516ca80a337..c2b3f63be7d 100644
--- a/nixos/modules/services/misc/octoprint.nix
+++ b/nixos/modules/services/misc/octoprint.nix
@@ -73,7 +73,7 @@ in
       };
 
       extraConfig = mkOption {
-        type = types.lines;
+        type = types.attrs;
         default = {};
         description = "Extra options which are added to OctoPrint's YAML configuration file.";
       };