diff --git a/server/src/main/resources/META-INF/keycloak-server.json b/server/src/main/resources/META-INF/keycloak-server.json
index aa446763cb..06efa79534 100644
--- a/server/src/main/resources/META-INF/keycloak-server.json
+++ b/server/src/main/resources/META-INF/keycloak-server.json
@@ -20,7 +20,9 @@
 
     "theme": {
         "default": "keycloak",
-        "dir": "${jboss.server.config.dir}/themes"
+        "folder": {
+          "dir": "${jboss.server.config.dir}/themes"
+        }
     },
 
     "login-forms": {