diff --git a/src/League/OAuth2/Server/Storage/Fluent/Client.php b/src/League/OAuth2/Server/Storage/Fluent/Client.php
index 8c8d5a2c..b9e2dab4 100644
--- a/src/League/OAuth2/Server/Storage/Fluent/Client.php
+++ b/src/League/OAuth2/Server/Storage/Fluent/Client.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace League\OAuth2\Server\Storage\Fluent;
+
 use \League\OAuth2\Server\Storage\ClientInterface;
 
 class Client implements ClientInterface {
diff --git a/src/League/OAuth2/Server/Storage/Fluent/Scope.php b/src/League/OAuth2/Server/Storage/Fluent/Scope.php
index ff99660b..db094243 100644
--- a/src/League/OAuth2/Server/Storage/Fluent/Scope.php
+++ b/src/League/OAuth2/Server/Storage/Fluent/Scope.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace League\OAuth2\Server\Storage\Fluent;
+
 use \League\OAuth2\Server\Storage\ScopeInterface;
 
 class Scope implements ScopeInterface {
diff --git a/src/League/OAuth2/Server/Storage/Fluent/Session.php b/src/League/OAuth2/Server/Storage/Fluent/Session.php
index f23d6ef6..e6f338b0 100644
--- a/src/League/OAuth2/Server/Storage/Fluent/Session.php
+++ b/src/League/OAuth2/Server/Storage/Fluent/Session.php
@@ -1,5 +1,7 @@
 <?php
 
+namespace League\OAuth2\Server\Storage\Fluent;
+
 use \League\OAuth2\Server\Storage\SessionInterface;
 
 class Session implements SessionInterface