diff --git a/VERSIONS_HOTLINE/30747 b/VERSIONS_HOTLINE/30747
new file mode 100644
index 0000000000000000000000000000000000000000..1097a362ccb1d1085a4d9e4eeaf2bd95c3ff0962
--- /dev/null
+++ b/VERSIONS_HOTLINE/30747
@@ -0,0 +1 @@
+ - ticket #30747 : Correction de la possibilité de déclarer une catégorie d'article comme étant sa propre catégorie parente.
\ No newline at end of file
diff --git a/library/Class/ArticleCategorie.php b/library/Class/ArticleCategorie.php
index 9e1cc7b6957ce2119002412439ec68f2d23cf3a1..edf5dbe37d59d307a47afa328e52622628782968 100644
--- a/library/Class/ArticleCategorie.php
+++ b/library/Class/ArticleCategorie.php
@@ -70,6 +70,8 @@ class Class_ArticleCategorie extends Storm_Model_Abstract {
     $filter = new Zend_Filter_StripTags();
     $this->setLibelle(trim($filter->filter($this->getLibelle())));
 
+    if($this->getId() === $this->getIdCatMere())
+      $this->setIdCatMere(0);
   }
 
 
diff --git a/tests/library/Class/ArticleCategorieTest.php b/tests/library/Class/ArticleCategorieTest.php
index 8d06fbf1fed035278c08832b3951e39fe108eca5..577bc2b52af6407d6643433d80b96892cf1140c1 100644
--- a/tests/library/Class/ArticleCategorieTest.php
+++ b/tests/library/Class/ArticleCategorieTest.php
@@ -16,7 +16,7 @@
  *
  * You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
  * along with BOKEH; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA 
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
  */
 
 class ArticleCategorieTest extends Storm_Test_ModelTestCase {
@@ -82,7 +82,7 @@ class ArticleCategorieTest extends Storm_Test_ModelTestCase {
       ->answers(true)
       ->getWrapper();
 
-    
+
     $this->concert_truffaz = Class_Article::newInstanceWithId(23, ['id_cat' => 34,
                                                                    'titre' => 'Concert Truffaz']);
 
@@ -169,9 +169,9 @@ class ArticleCategorieTest extends Storm_Test_ModelTestCase {
   }
 
 
-  /** 
+  /**
    * Régression vue sur Pontault
-   * @test 
+   * @test
    */
   public function annecyWithCarriageReturnToJSONShouldRemoveCR() {
     $this->annecy->setLibelle("Annecy\n");
@@ -317,11 +317,11 @@ JSON;
 
   /** @test */
   public function findByPathAdulteConcertsJazzShouldAnswerCategorieJazz() {
-    $this->assertEquals($this->cat_concerts_jazz, 
+    $this->assertEquals($this->cat_concerts_jazz,
                         Class_ArticleCategorie::getRoot()->findByPath('/Adulte/Concerts/Jazz'));
   }
 
-  
+
   /** @test **/
   public function profilConcertPathAndCategorieConcertPathShouldBeEquals() {
     $this->assertEquals($this->cat_concerts->getPath(), $this->concert_profil->getPath());
@@ -334,4 +334,27 @@ JSON;
   }
 }
 
-?>
\ No newline at end of file
+
+
+class ArticleCategorieParentTest extends Storm_Test_ModelTestCase {
+  protected $_news;
+
+  public function setUp() {
+    parent::setUp();
+
+    $annecy = $this->fixture('Class_Bib',
+                             ['id' => 1,
+                              'libelle' => 'Annecy']);
+
+    $this->_news = $this->fixture('Class_ArticleCategorie',
+                                  ['id' => 5,
+                                   'id_cat_mere' => 5,
+                                   'libelle' => 'News']);
+  }
+
+
+  /** @test */
+  public function newsParentCategorieShouldBe0() {
+    $this->assertEquals('0', $this->_news->getIdCatMere());
+  }
+}
\ No newline at end of file