diff --git a/libs/common/src/key-management/master-password/types/master-password.types.ts b/libs/common/src/key-management/master-password/types/master-password.types.ts
index 46d4b61c14e..4b7cf5365e2 100644
--- a/libs/common/src/key-management/master-password/types/master-password.types.ts
+++ b/libs/common/src/key-management/master-password/types/master-password.types.ts
@@ -9,6 +9,9 @@ import { EncString } from "../../crypto/models/enc-string";
  * The Base64-encoded master password authentication hash, that is sent to the server for authentication.
  */
 export type MasterPasswordAuthenticationHash = Opaque<string, "MasterPasswordAuthenticationHash">;
+/**
+ * You MUST obtain this through the emailToSalt function in MasterPasswordService
+ */
 export type MasterPasswordSalt = Opaque<string, "MasterPasswordSalt">;
 export type MasterKeyWrappedUserKey = Opaque<EncString, "MasterPasswordSalt">;