diff --git a/img/error.png b/img/error.png
new file mode 100644
index 0000000..f4884c9
Binary files /dev/null and b/img/error.png differ
diff --git a/lib/thumbs.class.php b/lib/thumbs.class.php
index 0de9890..0245c40 100644
--- a/lib/thumbs.class.php
+++ b/lib/thumbs.class.php
@@ -45,6 +45,11 @@ class thumb {
 
     if (!file_exists($dstpath)) {
       $type  = exif_imagetype($src);
+      if ($type == 0) {
+        error_log("$src: Unknown Image Type");
+        return "img/error.png";
+      }
+
       $image = call_user_func(self::IMAGE_HANDLERS[$type]['load'], $src);
 
       $srcwidth  = imagesx($image);