diff --git a/README.md b/README.md
index 40a6091..aa1d5f9 100644
--- a/README.md
+++ b/README.md
@@ -55,7 +55,7 @@ $web3->clientVersion(function ($err, $version) {
         // do something
         return;
     }
-    if (isset($client)) {
+    if (isset($version)) {
         echo 'Client version: ' . $version;
     }
 });