diff --git a/core/core.php b/core/core.php
index 9019f7b..b392e4c 100644
--- a/core/core.php
+++ b/core/core.php
@@ -17,6 +17,11 @@
 use phpbb\request\request;
 use phpbb\user;
 use phpbb\auth\auth;
+use phpbbseo\usu\core\traits\customise;
+use phpbbseo\usu\core\traits\rewriter;
+use phpbbseo\usu\core\traits\url;
+use phpbbseo\usu\core\traits\seo;
+use phpbbseo\usu\core\traits\get_set;
 
 /**
 * core Class
diff --git a/core/customise.php b/core/traits/customise.php
similarity index 99%
rename from core/customise.php
rename to core/traits/customise.php
index 482dcc1..ad1e732 100644
--- a/core/customise.php
+++ b/core/traits/customise.php
@@ -8,7 +8,7 @@
 *
 */
 
-namespace phpbbseo\usu\core;
+namespace phpbbseo\usu\core\traits;
 
 /**
 * customize trait
diff --git a/core/get_set.php b/core/traits/get_set.php
similarity index 99%
rename from core/get_set.php
rename to core/traits/get_set.php
index 4d33d88..c47ce4b 100644
--- a/core/get_set.php
+++ b/core/traits/get_set.php
@@ -8,7 +8,7 @@
 *
 */
 
-namespace phpbbseo\usu\core;
+namespace phpbbseo\usu\core\traits;
 
 /**
 * get_set trait
diff --git a/core/rewriter.php b/core/traits/rewriter.php
similarity index 99%
rename from core/rewriter.php
rename to core/traits/rewriter.php
index c54321d..34a047b 100644
--- a/core/rewriter.php
+++ b/core/traits/rewriter.php
@@ -8,7 +8,7 @@
 *
 */
 
-namespace phpbbseo\usu\core;
+namespace phpbbseo\usu\core\traits;
 
 /**
 * rewriter trait
diff --git a/core/seo.php b/core/traits/seo.php
similarity index 99%
rename from core/seo.php
rename to core/traits/seo.php
index 4a811ce..970ad64 100644
--- a/core/seo.php
+++ b/core/traits/seo.php
@@ -8,7 +8,7 @@
 *
 */
 
-namespace phpbbseo\usu\core;
+namespace phpbbseo\usu\core\traits;
 
 /**
 * seo trait
diff --git a/core/url.php b/core/traits/url.php
similarity index 99%
rename from core/url.php
rename to core/traits/url.php
index 6c204c8..fee3cb1 100644
--- a/core/url.php
+++ b/core/traits/url.php
@@ -8,7 +8,7 @@
 *
 */
 
-namespace phpbbseo\usu\core;
+namespace phpbbseo\usu\core\traits;
 
 /**
 * url trait