diff --git a/docker-compose.yml b/docker-compose.yml
index 3f2c6bb283d0e4815c2ee17d6fe7e8edf6209bb5..b343f2384545a2ec4e4e4640c806908c7241b00c 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -32,7 +32,7 @@ services:
       - 9200:9200
       - 9300:9300
     environment:
-      - discovery.type=single-node
+      - "discovery.type=single-node"
     
   frontend:
     ports: