diff --git a/modules/programs/irssi.nix b/modules/programs/irssi.nix
index ea7498633..ff60a463a 100644
--- a/modules/programs/irssi.nix
+++ b/modules/programs/irssi.nix
@@ -155,7 +155,7 @@ in {
       extraConfig = mkOption {
         default = "";
         description = "These lines are appended to the Irssi configuration.";
-        type = types.str;
+        type = types.lines;
       };
 
       aliases = mkOption {