diff --git a/guacamole/config.yaml b/guacamole/config.yaml
index 1628f5b02..3eee5fd49 100644
--- a/guacamole/config.yaml
+++ b/guacamole/config.yaml
@@ -67,7 +67,7 @@ devices:
 environment:
   GUACAMOLE_HOME: /config
   PGDATA: /config/postgres
-  PROXY_ALLOWED_IPS_REGEX: "*"
+  PROXY_ALLOWED_IPS_REGEX: ".*"
   PROXY_BY_HEADER: X-Forwarded-By
   PROXY_IP_HEADER: X-Forwarded-For
   PROXY_PROTOCOL_HEADER: X-Forwarded-Proto