diff --git a/src/constants/keeperTheme.ts b/src/constants/keeperTheme.ts
index 2c27759e..907f482a 100644
--- a/src/constants/keeperTheme.ts
+++ b/src/constants/keeperTheme.ts
@@ -6,7 +6,7 @@ export const KEEPER_COLOR = {
   subGray: '#575E69',
   subRed: '#EF4444',
   subOrange: '#FFA500',
-};
+} as const;
 
 export const SIDEBAR_WIDTH = 240;
-export const HEADER_HEIGHT = { xs: 56, sm: 66 };
+export const HEADER_HEIGHT = { xs: 56, sm: 66 } as const;