diff --git a/system-config/services/containers/keycloak/default.nix b/system-config/services/containers/keycloak/default.nix
index fa2db53..07fc786 100644
--- a/system-config/services/containers/keycloak/default.nix
+++ b/system-config/services/containers/keycloak/default.nix
@@ -59,7 +59,7 @@
 
                         proxy-headers = "xforwarded";
 
-                        proxy-trusted-addresses = [ "192.168.100.11" ];
+                        proxy-trusted-addresses = "192.168.100.11";
                     };
 
                     initialAdminPassword = "7567";