diff --git a/src/ConfigFactory.php b/src/ConfigFactory.php
index 21b7a39..affcaf0 100644
--- a/src/ConfigFactory.php
+++ b/src/ConfigFactory.php
@@ -57,6 +57,10 @@ public static function createFromFile($_)
             try {
                 $file = array_pop($files);
 
+                if (! is_string($file)) {
+                    continue;
+                }
+                
                 if (! is_readable($file)) {
                     continue;
                 }