diff --git a/README.md b/README.md
index 4813174..2d99761 100644
--- a/README.md
+++ b/README.md
@@ -34,11 +34,11 @@ $baseTimeMs = 1000;
 
 $backOff = new ExponentialBackOff($maxAttempts, $baseTimeMs);
 
-$classifier = new ExceptionClassifier([
+$exceptionClassifier = new ExceptionClassifier([
     \RuntimeException::class,
 ]);
 
-$retry = new Retry($backOff, $classifier);
+$retry = new Retry($backOff, $exceptionClassifier);
 ```
 
 Put the business logic in a callback function and call it: