diff --git a/src/Graph/Presenters/GraphViz.php b/src/Graph/Presenters/GraphViz.php
index <HASH>..<HASH> 100644
--- a/src/Graph/Presenters/GraphViz.php
+++ b/src/Graph/Presenters/GraphViz.php
@@ -154,7 +154,7 @@ HTML;
         /**
          * @var Node $node
          */
-        foreach($nodes as $node) {
+        foreach ($nodes as $node) {
             /**
              * @var Vertex $vertex
              */
@@ -190,4 +190,4 @@ HTML;
     {
         return $this->graphViz->createImageHtml($this->graph);
     }
-}
\ No newline at end of file
+}
making it psr-2 compatible