diff --git a/src/Phpml/Clustering/KMeans/Cluster.php b/src/Phpml/Clustering/KMeans/Cluster.php
index c160b6c..28fa8af 100644
--- a/src/Phpml/Clustering/KMeans/Cluster.php
+++ b/src/Phpml/Clustering/KMeans/Cluster.php
@@ -60,6 +60,8 @@ class Cluster extends Point implements IteratorAggregate, Countable
      * @param Point $point
      *
      * @return Point
+     *
+     * @throws \LogicException
      */
     public function attach(Point $point)
     {
diff --git a/src/Phpml/Clustering/KMeans/Point.php b/src/Phpml/Clustering/KMeans/Point.php
index a8d72e5..ce1c44e 100644
--- a/src/Phpml/Clustering/KMeans/Point.php
+++ b/src/Phpml/Clustering/KMeans/Point.php
@@ -53,11 +53,11 @@ class Point implements ArrayAccess
     }
 
     /**
-     * @param $points
+     * @param array $points
      *
      * @return mixed
      */
-    public function getClosest($points)
+    public function getClosest(array $points)
     {
         foreach ($points as $point) {
             $distance = $this->getDistanceWith($point, false);
diff --git a/src/Phpml/Clustering/KMeans/Space.php b/src/Phpml/Clustering/KMeans/Space.php
index 40b1f1d..49ded31 100644
--- a/src/Phpml/Clustering/KMeans/Space.php
+++ b/src/Phpml/Clustering/KMeans/Space.php
@@ -65,7 +65,7 @@ class Space extends SplObjectStorage
     }
 
     /**
-     * @param object $point
+     * @param Point $point
      * @param null   $data
      */
     public function attach($point, $data = null)