diff --git a/src/Analyser.php b/src/Analyser.php
index 3bbfebf..36fe135 100644
--- a/src/Analyser.php
+++ b/src/Analyser.php
@@ -122,7 +122,7 @@ private function analyseFile(string $file): array
         assert($lines >= 0);
 
         try {
-            $nodes = $parser->parse(file_get_contents($file));
+            $nodes = $parser->parse($source);
 
             assert($nodes !== null);