diff --git a/logging.yaml b/logging.yaml
index c06bb95..817c7c3 100644
--- a/logging.yaml
+++ b/logging.yaml
@@ -107,7 +107,7 @@ volumes:
       o: bind
       device: /DockerVol/Loki/data
 
-  loki_wal
+  loki_wal:
     driver: local
     driver_opts:
       type: none