diff --git a/modules/system/defaults/NSGlobalDomain.nix b/modules/system/defaults/NSGlobalDomain.nix
index da8dd88..c60ca05 100644
--- a/modules/system/defaults/NSGlobalDomain.nix
+++ b/modules/system/defaults/NSGlobalDomain.nix
@@ -53,7 +53,7 @@ in {
     };
 
     system.defaults.NSGlobalDomain.AppleIconAppearanceTheme = mkOption {
-      type = types.nullOr (types.enum [ "DarkRegular" "DarkAutomatic" "ClearLight" "Clear Dark" "Clear Automatic" "TintedLight" "TintedDark" "TintedAutomatic" ]);
+      type = types.nullOr (types.enum [ "RegularDark" "RegularAutomatic" "ClearLight" "ClearDark" "ClearAutomatic" "TintedLight" "TintedDark" "TintedAutomatic" ]);
       default = null;
       description = ''
         Set icon and widget style
diff --git a/tests/fixtures/system-defaults-write/user.txt b/tests/fixtures/system-defaults-write/user.txt
index 9041542..b29e19f 100644
--- a/tests/fixtures/system-defaults-write/user.txt
+++ b/tests/fixtures/system-defaults-write/user.txt
@@ -21,7 +21,7 @@ launchctl asuser "$(id -u -- test-defaults-user)" sudo --user=test-defaults-user
 launchctl asuser "$(id -u -- test-defaults-user)" sudo --user=test-defaults-user -- defaults write -g AppleIconAppearanceTheme '<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
-<string>DarkRegular</string>
+<string>RegularDark</string>
 </plist>'
 launchctl asuser "$(id -u -- test-defaults-user)" sudo --user=test-defaults-user -- defaults write -g AppleKeyboardUIMode '<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
diff --git a/tests/system-defaults-write.nix b/tests/system-defaults-write.nix
index 4af5512..8773014 100644
--- a/tests/system-defaults-write.nix
+++ b/tests/system-defaults-write.nix
@@ -26,7 +26,7 @@
   system.defaults.NSGlobalDomain.AppleEnableMouseSwipeNavigateWithScrolls = false;
   system.defaults.NSGlobalDomain.AppleEnableSwipeNavigateWithScrolls = false;
   system.defaults.NSGlobalDomain.AppleFontSmoothing = 1;
-  system.defaults.NSGlobalDomain.AppleIconAppearanceTheme = "DarkRegular";
+  system.defaults.NSGlobalDomain.AppleIconAppearanceTheme = "RegularDark";
   system.defaults.NSGlobalDomain.AppleICUForce24HourTime = true;
   system.defaults.NSGlobalDomain.AppleKeyboardUIMode = 3;
   system.defaults.NSGlobalDomain.ApplePressAndHoldEnabled = true;