diff --git a/README.md b/README.md
index 913744503cc61ef0b8f0641cfb7c1fe0ae8a6bd4..2ae2967e8a3120e8b30995e6895bf6fc61d7f6bc 100644
--- a/README.md
+++ b/README.md
@@ -226,7 +226,7 @@ the function will be called with an array of elements `res` containing date and
     for(let i=0; i<res.length; ++i){
         let elem = res[i];
         // elem[0] is ISOTimestamp : string
-        // elem[1] is stepCount    : number
+        // elem[1] is step count   : number
     }
 });
 ```