diff --git a/inbucket/docker-compose.yml b/inbucket/docker-compose.yml
index 91d564b..349a90b 100644
--- a/inbucket/docker-compose.yml
+++ b/inbucket/docker-compose.yml
@@ -7,7 +7,7 @@ services:
     ports:
       - "${HOST_HTTP_ADDR:-0.0.0.0}:${HOST_HTTP_PORT:-8389}:9000/tcp"
       - "${HOST_SMTP_ADDR:-0.0.0.0}:${HOST_SMTP_PORT:-8389}:2500/tcp"
-      - "${HOST_HTTP_ADDR:-0.0.0.0}:${HOST_POP3_PORT:-8389}:1100/tcp"
+      - "${HOST_POP3_ADDR:-0.0.0.0}:${HOST_POP3_PORT:-8389}:1100/tcp"
     volumes:
       # Not used by default, you need to configure storage parameters to store on disk.
       - ./data:/data/