diff --git a/docker-compose/docker-compose.yaml b/docker-compose/docker-compose.yaml
index d3757151..84151e0b 100644
--- a/docker-compose/docker-compose.yaml
+++ b/docker-compose/docker-compose.yaml
@@ -49,7 +49,7 @@ services:
       # - '/LOCAL/CERT/PATH.pem:/sourcegraph.pem'
       #
       # Uncomment / update the following line when using HTTPS with custom certficates
-      # - '/LOCAL/KEY/PATH.pem:/sourcegraph.key'
+      # - '/LOCAL/KEY/PATH.key:/sourcegraph.key'
     ports:
       - '0.0.0.0:80:80'
       - '0.0.0.0:443:443'