diff --git a/src/Composer/Compiler.php b/src/Composer/Compiler.php
index 58c4d85f5..94f1a15ff 100644
--- a/src/Composer/Compiler.php
+++ b/src/Composer/Compiler.php
@@ -23,6 +23,8 @@ use Symfony\Component\Process\Process;
  */
 class Compiler
 {
+    private $version;
+
     /**
      * Compiles composer into a single phar file
      *