diff --git a/src/Csv/CsvReader.php b/src/Csv/CsvReader.php
index 00a3507..494391c 100644
--- a/src/Csv/CsvReader.php
+++ b/src/Csv/CsvReader.php
@@ -13,8 +13,7 @@ class CsvReader
         private readonly string $filePath
     ) {
         if (!file_exists($this->filePath)) {
-            $handle = fopen($this->filePath, 'wb');
-            fclose($handle);
+            throw new RuntimeException('Input file does not exist.');
         }
     }