diff --git a/includes/utilities.php b/includes/utilities.php
index 4de17d9..4d35681 100644
--- a/includes/utilities.php
+++ b/includes/utilities.php
@@ -74,10 +74,16 @@ function getMainThematique($thematique)
 		return get_term($thematique->parent, 'thematiques');
 	}
 }
-// DOES THE SAME THING AS ABOVE BUT RENAMED
+// Retriev the main thematique for a spefic postID
 function getPostMainThematique($post)
 {
-	return getMainThematique(get_the_terms($post, "thematiques")[0]);
+	$terms = get_the_terms($post, "thematiques");
+	if (!$terms) return null;
+
+	$mainThematique = getMainThematique(get_the_terms($post, "thematiques")[0]);
+	if (!$mainThematique) return null;
+
+	return $mainThematique;
 }
 
 // TO GET ARCHIVE RELATED PAGES BY TEMPLATE
@@ -137,9 +143,16 @@ function compareThematiquePriority($postA, $postB)
 	$thematiqueA = getPostMainThematique($postA);
 	$thematiqueB = getPostMainThematique($postB);
 
-	if ($priorityA == $priorityB) {
+
+	write_log('############## post A');
+	// write_log($postA);
+	write_log("####" . $thematiqueA->name);
+	if ($priorityA == $priorityB && $thematiqueA->name != $thematiqueB->name) {
 		return strcmp($thematiqueA->name, $thematiqueB->name);
 	}
+	if ($priorityA == $priorityB && $thematiqueA->name == $thematiqueB->name) {
+		return strcmp($postA->title, $postB->title);
+	}
 	if ($priorityA < $priorityB) {
 		return 1;
 	}