diff --git a/Test/PrepareCircleTrait.php b/Test/PrepareCircleTrait.php
new file mode 100644
index 000000000..df150e556
--- /dev/null
+++ b/Test/PrepareCircleTrait.php
@@ -0,0 +1,57 @@
+<?php
+
+/*
+ * Copyright (C) 2015 Julien Fastré <julien.fastre@champs-libres.coop>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace Chill\MainBundle\Test;
+
+/**
+ * A trait to prepare center
+ * 
+ * **Usage :** You must set up trait with `setUpTrait` before use
+ * and use tearDownTrait after usage.
+ * 
+ *
+ * @author Julien Fastré <julien.fastre@champs-libres.coop>
+ * @codeCoverageIgnore
+ */
+trait PrepareCircleTrait
+{
+    private $circleProphet;
+    
+    /**
+     * prepare a mocked center, with and id and name given
+     * 
+     * @param int $id
+     * @param string $name
+     * @return \Chill\MainBundle\Entity\Center 
+     */
+    protected function prepareCircle($id, $name)
+    {
+        
+        if ($this->circleProphet === NULL) {
+            $this->circleProphet = new \Prophecy\Prophet();
+        }
+        
+        $scope = $this->circleProphet->prophesize();
+        $scope->willExtend('\Chill\MainBundle\Entity\Scope');
+        $scope->getId()->willReturn($id);
+        $scope->getName()->willReturn($name);
+        
+        return $scope->reveal();
+    }
+}
diff --git a/Test/PrepareScopeTrait.php b/Test/PrepareScopeTrait.php
index 288e0c39b..01de3c0f6 100644
--- a/Test/PrepareScopeTrait.php
+++ b/Test/PrepareScopeTrait.php
@@ -28,10 +28,11 @@ namespace Chill\MainBundle\Test;
  *
  * @author Julien Fastré <julien.fastre@champs-libres.coop>
  * @codeCoverageIgnore
+ * @deprecated use PrepareCircleTrait instead
  */
 trait PrepareScopeTrait
 {
-    private $scopeProphet;
+    use PrepareCircleTrait;
     
     /**
      * prepare a mocked center, with and id and name given
@@ -39,19 +40,10 @@ trait PrepareScopeTrait
      * @param int $id
      * @param string $name
      * @return \Chill\MainBundle\Entity\Center 
+     * @deprecated
      */
     protected function prepareScope($id, $name)
     {
-        
-        if ($this->scopeProphet === NULL) {
-            $this->scopeProphet = new \Prophecy\Prophet();
-        }
-        
-        $scope = $this->scopeProphet->prophesize();
-        $scope->willExtend('\Chill\MainBundle\Entity\Scope');
-        $scope->getId()->willReturn($id);
-        $scope->getName()->willReturn($name);
-        
-        return $scope->reveal();
+        return $this->prepareCircle($id, $name);
     }
 }