diff --git a/StringLiteralList.d.ts b/StringLiteralList.d.ts
index 2a822d4..1e5e307 100644
--- a/StringLiteralList.d.ts
+++ b/StringLiteralList.d.ts
@@ -18,7 +18,7 @@ export interface IStringList<T extends unknown>
   withSuffix<P extends string>(
     suffix: P,
   ): IStringList<sl.utils.StringConcat<T extends string ? T : string, P>>;
-  value<V extends T & string>(val: V): V extends T ? T : never;
+  value<V extends T & string>(val: V): V extends T ? V : never;
   mutable(): string[];
 
   // Implemented methods to return the frozen array, typed as IStringList.
diff --git a/package-lock.json b/package-lock.json
index e51d9aa..3e691d6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "string-literal-list",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "string-literal-list",
-      "version": "1.5.0",
+      "version": "1.5.1",
       "license": "MIT",
       "dependencies": {
         "core-js": "^3.36.0"
diff --git a/package.json b/package.json
index c351e09..3cadfdb 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "string-literal-list",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "description": "an array for string literal",
   "main": "stringList.js",
   "types": "stringList.d.ts",