diff --git a/modules/services/mako.nix b/modules/services/mako.nix
index 6f6ff0f6f..afb55b37f 100644
--- a/modules/services/mako.nix
+++ b/modules/services/mako.nix
@@ -6,7 +6,6 @@
 }:
 let
   inherit (lib)
-    types
     mkIf
     mkEnableOption
     mkPackageOption
@@ -16,8 +15,8 @@ let
   cfg = config.services.mako;
 
   generateConfig = lib.generators.toINIWithGlobalSection { };
-  settingsType = with types; attrsOf str;
-  criteriaType = types.attrsOf settingsType;
+  iniType = (pkgs.formats.ini { }).type;
+  iniAtomType = (pkgs.formats.ini { }).lib.types.atom;
 in
 {
   meta.maintainers = [ lib.maintainers.onny ];
@@ -76,7 +75,7 @@ in
     enable = mkEnableOption "mako";
     package = mkPackageOption pkgs "mako" { };
     settings = mkOption {
-      type = settingsType;
+      type = lib.types.attrsOf iniAtomType;
       default = { };
       example = ''
         {
@@ -102,7 +101,7 @@ in
       '';
     };
     criteria = mkOption {
-      type = criteriaType;
+      type = iniType;
       default = { };
       example = {
         "actionable=true" = {
diff --git a/tests/modules/services/mako/example-config.nix b/tests/modules/services/mako/example-config.nix
index 8bf616f41..f9397b233 100644
--- a/tests/modules/services/mako/example-config.nix
+++ b/tests/modules/services/mako/example-config.nix
@@ -2,20 +2,20 @@
   services.mako = {
     enable = true;
     settings = {
-      actions = "true";
+      actions = true;
       anchor = "top-right";
       backgroundColor = "#000000";
       borderColor = "#FFFFFF";
-      borderRadius = "0";
-      defaultTimeout = "0";
+      borderRadius = 0;
+      defaultTimeout = 0;
       font = "monospace 10";
-      height = "100";
-      width = "300";
-      icons = "true";
-      ignoreTimeout = "false";
+      height = 100;
+      width = 300;
+      icons = true;
+      ignoreTimeout = false;
       layer = "top";
-      margin = "10";
-      markup = "true";
+      margin = 10;
+      markup = true;
     };
 
     criteria = {
@@ -24,7 +24,7 @@
       };
 
       "app-name=Google\\ Chrome" = {
-        max-visible = "5";
+        max-visible = 5;
       };
 
       "field1=value field2=value" = {