diff --git a/includes/utilities.php b/includes/utilities.php
index faa7cfe..9b9dbbb 100644
--- a/includes/utilities.php
+++ b/includes/utilities.php
@@ -60,3 +60,16 @@ function get_archive_page_subtitle_html($post_type)
 			return '';
 	}
 }
+function hasPostTypeNumerotation($post_type)
+{
+	switch ($post_type) {
+		case 'analyses-etudes':
+		case 'expositions':
+		case 'outils-pedagogiques':
+		case 'recherches':
+		case 'revues':
+			return true;
+		default:
+			return false;
+	}
+}