diff --git a/formulaires/editer_post.php b/formulaires/editer_post.php
index c5c6d58..1d9b8b2 100644
--- a/formulaires/editer_post.php
+++ b/formulaires/editer_post.php
@@ -162,6 +162,7 @@ function formulaires_editer_post_traiter_dist($id_article = 0, $redirect = ''){
 	// maj des mots fermes
 	$T_id_groupe = sql_allfetsel('id_groupe','spip_groupes_mots','grigri!="tags"');
 	$T_id_groupe = array_column($T_id_groupe,'id_groupe');
+	$T_ids_mots = array();
 
 	foreach ($T_id_groupe as $id_groupe) {
 		$from = array(
@@ -177,14 +178,22 @@ function formulaires_editer_post_traiter_dist($id_article = 0, $redirect = ''){
 
 		$ids_mots  = sql_allfetsel('M.id_mot AS id_mot', $from, $where);
 		$ids_mots  = array_column($ids_mots, 'id_mot');
-		$coches    = _request('id_emplacements');
-		
-		$associer  = array_diff($coches, $ids_mots);
-		$dissocier = array_diff($ids_mots, $coches);
+		foreach($ids_mots as $id_mot){
+			$T_ids_mots[] = $id_mot;
+		}
+	}
+
+	$coches    = _request('id_emplacements');
+
+	if (count($coches)){
+		$associer  = array_diff($coches, $T_ids_mots);
+		$dissocier = array_diff($T_ids_mots, $coches);
 
 		objet_associer(array('mot' => $associer),array('article' => intval($id_article)));
 		objet_dissocier(array('mot' => $dissocier), array('article' => intval($id_article)));
-
+	}
+	else{
+		objet_dissocier(array('mot' => $T_ids_mots), array('article' => intval($id_article)));
 	}
 
 	include_spip('action/editer_objet');