diff --git a/src/TextMateSharp.Grammars/RegistryOptions.cs b/src/TextMateSharp.Grammars/RegistryOptions.cs
index 16a977b..abf156b 100644
--- a/src/TextMateSharp.Grammars/RegistryOptions.cs
+++ b/src/TextMateSharp.Grammars/RegistryOptions.cs
@@ -315,7 +315,7 @@ string GetThemeFile(ThemeName name)
                     return "light_plus.json";
                 case ThemeName.Monokai:
                     return "monokai-color-theme.json";
-                case ThemeName.Onedark:
+                case ThemeName.OneDark:
                     return "onedark-color-theme.json";
                 case ThemeName.QuietLight:
                     return "quietlight-color-theme.json";
diff --git a/src/TextMateSharp.Grammars/ThemeName.cs b/src/TextMateSharp.Grammars/ThemeName.cs
index 23e9103..77bb5ed 100644
--- a/src/TextMateSharp.Grammars/ThemeName.cs
+++ b/src/TextMateSharp.Grammars/ThemeName.cs
@@ -9,7 +9,7 @@ public enum ThemeName
         KimbieDark,
         Light,
         LightPlus,
-        Onedark,
+        OneDark,
         Monokai,
         QuietLight,
         Red,