diff --git a/Stdlib/Graph/Graph.php b/Stdlib/Graph/Graph.php
index 604a81740..9a3df16cc 100644
--- a/Stdlib/Graph/Graph.php
+++ b/Stdlib/Graph/Graph.php
@@ -349,8 +349,8 @@ class Graph
             return false;
         }
 
-        $visited[$node]  = true;
-        $stack[$node]    = true;
+        $visited[$node] = true;
+        $stack[$node]   = true;
 
         $neighbors = $this->nodes[$node]->getNeighbors();
         foreach ($neighbors as $neighbor) {