diff --git a/clevercloud/rebuild.sh b/clevercloud/rebuild.sh
index 4e2475d..cd3512a 100755
--- a/clevercloud/rebuild.sh
+++ b/clevercloud/rebuild.sh
@@ -4,7 +4,13 @@ if [[ "$INSTANCE_NUMBER" != "0" ]]; then
   exit 0
 fi
 
-curl -X POST \
+if [[ -z "$REBUILD_API_TOKEN" ]]; then
+  echo "REBUILD_API_TOKEN non défini" >&2
+  exit 1
+fi
+
+curl -sf -X POST \
   "https://api-bridge.clever-cloud.com/v2/organisations/${CC_OWNER_ID}/applications/${APP_ID}/instances" \
   -H "Content-Type: application/json" \
-  -d "{\"token\": \"${REBUILD_API_TOKEN}\"}"
+  -d "{\"token\": \"${REBUILD_API_TOKEN}\"}" \
+  || echo "Rebuild failed" >&2