diff --git a/PHPCI/Plugin/PhpUnit.php b/PHPCI/Plugin/PhpUnit.php
index 16de7aa0..76f321b1 100755
--- a/PHPCI/Plugin/PhpUnit.php
+++ b/PHPCI/Plugin/PhpUnit.php
@@ -101,7 +101,7 @@ class PhpUnit implements PHPCI\Plugin, PHPCI\ZeroConfigPlugin
         }
 
         if (isset($options['args'])) {
-            $this->args = $options['args'];
+            $this->args = $this->phpci->interpolate($options['args']);
         }
 
         if (isset($options['path'])) {