diff --git a/src/DOMDocumentFactory.php b/src/DOMDocumentFactory.php
index ddca1d5..9ab2a76 100644
--- a/src/DOMDocumentFactory.php
+++ b/src/DOMDocumentFactory.php
@@ -77,7 +77,7 @@ public static function fromFile(string $file): DOMDocument
         $xml = @file_get_contents($file);
         if ($xml === false) {
             $e = error_get_last();
-            $error = $e['message'] ?: "Check that the file exists and can be read.";
+            $error = $e['message'] ?? "Check that the file exists and can be read.";
 
             throw new IOException("File '$file' was not loaded;  $error");
         }