diff --git a/prometheus/3.0.0/docker-compose.yml b/prometheus/3.0.0/docker-compose.yml
index 596f7a3bd..eaf0d7e48 100644
--- a/prometheus/3.0.0/docker-compose.yml
+++ b/prometheus/3.0.0/docker-compose.yml
@@ -15,7 +15,7 @@ services:
       - '--storage.tsdb.path=/prometheus'
       - '--web.console.libraries=/etc/prometheus/console_libraries'
       - '--web.console.templates=/etc/prometheus/consoles'
-      - '--storage.tsdb.retention=200h'
+      - '--storage.tsdb.retention.time=200h'
     labels:  
       createdBy: "Apps"
 networks: