diff --git a/src/components/GlossaryRelationCards.astro b/src/components/GlossaryRelationCards.astro
index 2754b49..5dc7a98 100644
--- a/src/components/GlossaryRelationCards.astro
+++ b/src/components/GlossaryRelationCards.astro
@@ -7,12 +7,15 @@ interface Props {
 }
 
 const { relationBlocks = [] } = Astro.props;
+const relationsHeadingId = "relations-conceptuelles";
 ---
 
 {relationBlocks.length > 0 && (
-  <section class="glossary-relations" aria-label="Relations conceptuelles">
-    <h2>Relations conceptuelles</h2>
-
+  <section
+    class="glossary-relations"
+    aria-labelledby={relationsHeadingId}
+  >
+    <h2 id={relationsHeadingId}>Relations conceptuelles</h2>
     <div class="glossary-relations-grid">
       {relationBlocks.map((block) => (
         <section class={`glossary-relations-card ${block.className}`}>