diff --git a/src/utils/globalTaf.mjs b/src/utils/globalTaf.mjs
index e038c4d..899328e 100644
--- a/src/utils/globalTaf.mjs
+++ b/src/utils/globalTaf.mjs
@@ -1,11 +1,18 @@
 import { hideMessageText } from "./feature_flags/rollModeMessageContent.mjs";
 
-globalThis.taf = Object.freeze({
-	utils: Object.freeze({
-		hideMessageText,
-	}),
-	FEATURES: {
-		ROLL_MODE_CONTENT: false,
-		STORABLE_SHEET_SIZE: false,
+Object.defineProperty(
+	globalThis,
+	`taf`,
+	{
+		value: Object.freeze({
+			utils: Object.freeze({
+				hideMessageText,
+			}),
+			FEATURES: Object.preventExtensions({
+				ROLL_MODE_CONTENT: false,
+				STORABLE_SHEET_SIZE: false,
+			}),
+		}),
+		writable: false,
 	},
-});
+);