diff --git a/README.md b/README.md
index 58da5f9..36fc581 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ use Selective\ImageType\ImageTypeDetector;
 $file = new SplFileInfo('example.jpg');
 
 $imageTypeDetector = new ImageTypeDetector();
-echo $imageTypeDetector->getImageTypeFromFile($file); // jpeg
+echo $imageTypeDetector->getImageTypeFromFile($file)->toString(); // jpeg
 ```
 
 ## Similar libraries
@@ -45,4 +45,4 @@ echo $imageTypeDetector->getImageTypeFromFile($file); // jpeg
 
 ## License
 
-* MIT
\ No newline at end of file
+* MIT