diff --git a/src/index.ts b/src/index.ts
index a878518..d47aa63 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -47,9 +47,9 @@ function idFactory(start = 1) {
   let id = start;
 
   return function nextId() {
-    const nextId = id;
+    const _nextId = id;
     id += 1;
-    return nextId;
+    return _nextId;
   };
 }