diff --git a/synapse/docker-compose.yml b/synapse/docker-compose.yml
index 532e298..915c298 100644
--- a/synapse/docker-compose.yml
+++ b/synapse/docker-compose.yml
@@ -6,7 +6,7 @@ services:
     volumes:
       - ${MAS_CONFIG_DIR}:/config
     environment:
-      MAS_CONFIG: ${MAS_CONFIG_DIR}/config.yaml
+      MAS_CONFIG: /config/config.yaml
     ports:
       - "8090:8090"
     depends_on: