diff --git a/src/Converter/GhostscriptConverter.php b/src/Converter/GhostscriptConverter.php
index f414e30..59020dd 100644
--- a/src/Converter/GhostscriptConverter.php
+++ b/src/Converter/GhostscriptConverter.php
@@ -44,7 +44,7 @@ public function __construct(GhostscriptConverterCommand $command, Filesystem $fs
     {
         $this->command = $command;
         $this->fs = $fs;
-        $this->tmp = empty($tmp)?sys_get_temp_dir():$tmp;
+        $this->tmp = $tmp ? : sys_get_temp_dir();
     }
 
     /**