diff --git a/cluster.go b/cluster.go
index 0ab8aea06..8c59059a1 100644
--- a/cluster.go
+++ b/cluster.go
@@ -228,12 +228,12 @@ func (c *Cluster) PartitionNodes(partitionID int) []*Node {
 	}
 
 	// Determine primary owner node.
-	node_index := c.Hasher.Hash(uint64(partitionID), len(c.Nodes))
+	nodeIndex := c.Hasher.Hash(uint64(partitionID), len(c.Nodes))
 
 	// Collect nodes around the ring.
 	nodes := make([]*Node, replicaN)
 	for i := 0; i < replicaN; i++ {
-		nodes[i] = c.Nodes[(node_index+i)%len(c.Nodes)]
+		nodes[i] = c.Nodes[(nodeIndex+i)%len(c.Nodes)]
 	}
 
 	return nodes