diff --git a/src/alu.d.ts b/src/alu.d.ts
index 54c88e6..21fe8ac 100644
--- a/src/alu.d.ts
+++ b/src/alu.d.ts
@@ -14,8 +14,8 @@ export declare global {
     type DefaultKeys = {
       [key: string]: Key;
     };
-    // tf? if I remove boolean it breaks in settings.ts. I don't know why.
-    type Key = Record<string?, string | KeyObj>;
+
+    type Key = Record<string, string | KeyObj>;
 
     type KeyObj = {
       name: string;