diff --git a/debian/50gnm.py b/debian/50gnm.py
index 0c6a92a..2acb14c 100644
--- a/debian/50gnm.py
+++ b/debian/50gnm.py
@@ -574,6 +574,9 @@ COMBO_ASSET_SLOTS = {
     "banner:cut": {"label": u"Logo bandeau pour Grand Lyon Connect"},
     "commune:banner": {"label": u"Bandeau communal"},
     "passerelle:cartads:dossier": {"label": u"Image tuile dossier urbanisme"},
+    "platforms:large-image": {
+        "label": "Grande image pour les plateformes (Twitter, Facebook, LinkedIn, etc.) (1200×630)"
+    },
 }
 
 PRODUCER_LABELS = {