diff --git a/docker/mjolnir/start.sh b/docker/mjolnir/start.sh
index 7dc9afb..09ab5ad 100644
--- a/docker/mjolnir/start.sh
+++ b/docker/mjolnir/start.sh
@@ -2,7 +2,7 @@
 
 # Default environment variables with their default values
 CONFIG_PATH="/etc/mjolnir/config.yml"
-DEFAULT_CONFIG_PATH="/etc/mjolnir/default.yaml"
+DEFAULT_CONFIG_PATH="/etc/mjolnir/default.yml"
 HOME_SERVER_URL="${HOME_SERVER_URL:-https://matrix.org}"
 RAW_HOME_SERVER_URL="${RAW_HOME_SERVER_URL:-https://matrix.org}"
 ACCESS_TOKEN="${ACCESS_TOKEN:-YOUR_TOKEN_HERE}"