diff --git a/docker-compose.yml b/docker-compose.yml
index 125bf9d..bbeb332 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -54,7 +54,7 @@ services:
         condition: any
         delay: 5s
     healthcheck:
-      test: [ "CMD-SHELL", "pg_isready", "-U", "$${POSTGRES_USERNAME}", "-d", "sonar" ]
+      test: [ "CMD-SHELL", "pg_isready", "-U", "${POSTGRES_USERNAME}", "-d", "sonar" ]
       interval: 1s
       timeout: 5s
       retries: 10