diff --git a/PHPCI/Builder.php b/PHPCI/Builder.php
index d112cc93..ba6d2e3a 100644
--- a/PHPCI/Builder.php
+++ b/PHPCI/Builder.php
@@ -338,7 +338,7 @@ class Builder implements LoggerAwareInterface
 
         $self = $this;
         $pluginFactory->registerResource(
-            function () use($self) {
+            function () use ($self) {
                 return $self;
             },
             null,
@@ -346,7 +346,7 @@ class Builder implements LoggerAwareInterface
         );
 
         $pluginFactory->registerResource(
-            function () use($build) {
+            function () use ($build) {
                 return $build;
             },
             null,