diff --git a/src/Stream/State/StreamState.php b/src/Stream/State/StreamState.php
index 0c4e59e..2325308 100644
--- a/src/Stream/State/StreamState.php
+++ b/src/Stream/State/StreamState.php
@@ -17,7 +17,9 @@
 class StreamState
 {
     const STATE_CREATED = 0;
+
     const STATE_READY = 1;
+
     const STATE_CLOSED = 2;
 
     /**
diff --git a/src/Url/Url.php b/src/Url/Url.php
index f45fe82..cdb786e 100644
--- a/src/Url/Url.php
+++ b/src/Url/Url.php
@@ -12,11 +12,17 @@
 class Url
 {
     const CHANGE_FREQ_ALWAYS = 'always';
+
     const CHANGE_FREQ_HOURLY = 'hourly';
+
     const CHANGE_FREQ_DAILY = 'daily';
+
     const CHANGE_FREQ_WEEKLY = 'weekly';
+
     const CHANGE_FREQ_MONTHLY = 'monthly';
+
     const CHANGE_FREQ_YEARLY = 'yearly';
+
     const CHANGE_FREQ_NEVER = 'never';
 
     const DEFAULT_PRIORITY = '1.0';