diff --git a/helpers/LazyVal.ts b/helpers/LazyVal.ts
index d630e08c9e4df8cb27eaac26d2e0a92b8b318857..a06ba8b1a0cf8cb20ff87f7862a2e4c5d5f1b854 100644
--- a/helpers/LazyVal.ts
+++ b/helpers/LazyVal.ts
@@ -1,6 +1,6 @@
 class LazyVal<T> {
     private val: T | undefined = undefined;
-    private valLoader: () => Promise<T> | T;
+    private readonly valLoader: () => Promise<T> | T;
 
     constructor(valLoader: () => Promise<T> | T) {
         this.valLoader = valLoader;