diff --git a/lib/Bridge.php b/lib/Bridge.php
index cca4b5a..688c502 100644
--- a/lib/Bridge.php
+++ b/lib/Bridge.php
@@ -262,7 +262,7 @@ class Bridge{
     * @return Bridge object dedicated
     */
     static public function create($nameBridge){
-        if( !static::isValidNameBridge($nameBridge) ){
+        if( !preg_match('@^[A-Z][a-zA-Z0-9-]*$@', $nameBridge)){
             throw new \InvalidArgumentException('Name bridge must be at least one uppercase follow or not by alphanumeric or dash characters.');
         }
 
@@ -303,10 +303,6 @@ class Bridge{
         return $dirBridge;
     }
 
-    static public function isValidNameBridge($nameBridge){
-        return preg_match('@^[A-Z][a-zA-Z0-9-]*$@', $nameBridge);
-    }
-
     /**
     * Lists the available bridges.
     * @return array List of the bridges
diff --git a/lib/Format.php b/lib/Format.php
index a2ede6d..0391606 100644
--- a/lib/Format.php
+++ b/lib/Format.php
@@ -118,7 +118,7 @@ class Format{
     }
 
     static public function create($nameFormat){
-        if( !static::isValidNameFormat($nameFormat) ){
+        if( !preg_match('@^[A-Z][a-zA-Z]*$@', $nameFormat)){
             throw new \InvalidArgumentException('Name format must be at least one uppercase follow or not by alphabetic characters.');
         }
 
@@ -155,10 +155,6 @@ class Format{
         return $dirFormat;
     }
 
-    static public function isValidNameFormat($nameFormat){
-        return preg_match('@^[A-Z][a-zA-Z]*$@', $nameFormat);
-    }
-
     /**
     * Read format dir and catch informations about each format depending annotation
     * @return array Informations about each format