diff --git a/src/Composer/Compiler.php b/src/Composer/Compiler.php
index 311a764ac..e9431636f 100644
--- a/src/Composer/Compiler.php
+++ b/src/Composer/Compiler.php
@@ -35,7 +35,7 @@ class Compiler
             unlink($pharFile);
         }
 
-        $process = new Process('git log --pretty="%h" -n1 HEAD', __DIR__);
+        $process = new Process('git log --pretty="%H" -n1 HEAD', __DIR__);
         if ($process->run() != 0) {
             throw new \RuntimeException('Can\'t run git log. You must ensure to run compile from composer git repository clone and that git binary is available.');
         }